{"title":"Sounds of Summer 2026","description":"","products":[{"product_id":"audioquest-niagara-7000-power-conditioner","title":"AudioQuest Niagara 7000 Low-Z Power\/Noise Dissipation System","description":"\u003ch1\u003eAudioQuest Niagara 7000 Low-Z Power\/Noise Dissipation System\u003c\/h1\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/stereophile_recommended_2018_logo_e11530fc-bffb-491f-bd9d-e8da0c37b9be_compact.jpg?v=1535498081\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSolves Noise, Distortion, and Current-Delivery Problems: AudioQuest Niagara 7000 Low-Z Power Noise-Dissipation System Gives Components the Power They Need for Optimal Performance\u003c\/h3\u003e\n\u003cp\u003eDesigned by power expert \u003cstrong\u003eGarth Powell\u003c\/strong\u003e and offering a cost-no-object comprehensive power solution, the \u003cstrong\u003eAudioQuest Niagara 7000 Low-Z Power Noise-Dissipation System\u003c\/strong\u003e completely rethinks AC power filtration. Delivering current on demand, incredible clarity, tremendous dynamic contrast, and jet-black backgrounds – all while providing complete protection from surges and spikes –\u003cstrong\u003e Niagara 7000\u003c\/strong\u003e delivers memorably emotional, immersive audio and video performances to users on an unprecedented scale. Multiple cutting-edge implementations – including \u003cstrong\u003eAudioQuest's Noise-Dissipation System\u003c\/strong\u003e, technologies developed by NASA, and the world's first dielectric-biased AC isolation transformers – comprise a comprehensive solution that cures distortion, noise, and current delivery. Visually, \u003cstrong\u003eNiagara 7000\u003c\/strong\u003e has a gorgeous, beveled, black-chrome faceplate that subtly reflects the colors and lights of the room. Much like how \u003cstrong\u003eNiagara 7000\u003c\/strong\u003e’s circuitry allows each connected component to deliver its own acoustic personality, the color of the faceplate visually mirrors its environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSolves Power-Line Problems and Current-Delivery Shortages\u003c\/strong\u003e\u003cbr\u003e The design goal for Niagara 7000 pertains to successfully addressing power-line problems that prevent audio\/video components from achieving their potential. Due to the great increase in airborne and AC-line-transmitted radio signals, combined with overtaxed utility lines and ever-increasing demands from high-definition audio\/video components, A\/V systems fall short of getting the power required to fulfill their potential. Furthermore, today's power amplifiers are strained for instantaneous peak-current demand even when driven at modest volumes. Although there has been a substantial increase in dynamic range from audio software, the loudspeakers are often no more efficient than they were 50 years ago. This places great demands on an amplifier's power supply, as well as the source of AC power supplying it. In order to properly accommodate the promise of today's ever-increasing bandwidth and dynamic range, Niagara 7000 offers extremely low system noise and provides superior current delivery across a very wide range of frequencies. Differential sample tests and spectrum analysis prove that up to a third of a high-resolution (low-level) audio signal can be lost, masked, or highly distorted by the vast levels of noise riding along the AC power lines feeding audio components. This noise couples into the signal circuitry as current noise and through the AC ground, permanently distorting and masking the source signal. Sensitive audio components require better alternating current.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eHolistic, Science-Based Noise-Dissipation Approach Proves Superior\u003c\/strong\u003e\u003cbr\u003e When it comes to noise dissipation for AC power, many approaches can yield meaningful results. However, some approaches impart unintended effects – ringing, current compression, and non-linear distortions – that can render the cure worse than the disease. Niagara 7000 takes a holistic, science-based approach to AC power technology and represents a comprehensive solution to the ever-increasing noise that plagues today's power lines. It uses optimized radio-frequency lead directionality, electrical capacitor forming technologies developed by Jet Propulsion Laboratories and NASA, and AC inlet and outlet contacts with heavy silver plating over extreme-purity copper to ensure the tightest-possible grip.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eInstantaneous-Current Reservoir of More Than 90A Peak\u003c\/strong\u003e\u003cbr\u003e Niagara 7000 also employs the patented AC Ground Noise-Dissipation System, the world's first dielectric-biased AC isolation transformers, and the widest bandwidth-linearized noise-dissipation circuit in the industry. The unique passive\/active transient power correction circuit features an instantaneous current reservoir of over 90A peak, specifically designed for today's current-starved power amplifiers. With Niagara 7000, music lovers will finally experience the clarity, dimensionality, frequency extension, dynamic contrast and grip their A\/V systems would have been capable of delivering – if only the power had been right!\u003c\/p\u003e\n\u003ch4\u003ePLEASE NOTE: The Niagara 7000 does not ship with a power cord! We have plenty of great options to fit any budget so please call for more info!\u003c\/h4\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePatented dielectric-biased symmetrical power isolation transformers:\u003c\/strong\u003e 2 for source component outlet banks\u003cbr\u003e\u003cstrong\u003eTransient power correction:\u003c\/strong\u003e 90 amps peak. Provides a current reservoir for any power amplifier (up to 25 ms)\u003cbr\u003e\u003cstrong\u003eLevel-X ultra-linear noise-dissipation technology:\u003c\/strong\u003e More than 23 octaves differential-mode filtering (3 kHz–1 GHz in excess of 24 dB reduction) and 20 octaves common-mode filtering (60 Hz–100 MHz in excess of 30dB reduction) with linear response, optimized for varying line and load impedance\u003cbr\u003e\u003cstrong\u003ePatented ground noise-dissipation system (all outlets):\u003c\/strong\u003e 6 banks of direction-controlled ground noise-dissipation\u003cbr\u003e\u003cstrong\u003eNon-sacrificial surge protection:\u003c\/strong\u003e Withstands multiple AC surges and spikes up to 6000 V\/3000 A without sustaining damage–sonically non-invasive\u003cbr\u003e\u003cstrong\u003eMaximum RMS input current:\u003c\/strong\u003e 20 Amps (RMS)\u003cbr\u003e\u003cstrong\u003eMaximum RMS current per source component output bank:\u003c\/strong\u003e 5 Amps (RMS)\u003cbr\u003e\u003cstrong\u003eOutlets:\u003c\/strong\u003e Source (8), High-Current (4)\u003cbr\u003e\u003cstrong\u003eTransient power correction:\u003c\/strong\u003e 90 A for 20-30 ms\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 17.5\" W x 5.24\" H x 17.2\" D (3-RU rack-mount kits optional)\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 86 lb\u003c\/p\u003e","brand":"AudioQuest","offers":[{"title":"Default Title","offer_id":21833139205,"sku":"NIAGARA7000","price":12500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/AAQNG7K.jpg?v=1741632374"},{"product_id":"audioquest-niagara-5000-low-z-power-noise-dissipation-system","title":"AudioQuest Niagara 5000 Low-Z Power\/Noise Dissipation System","description":"\u003ch1\u003eAudioQuest Niagara 5000 Low-Z Power\/Noise-Dissipation System\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eNote: AudioQuest has increased prices on Niagara since the video below was made.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/8OTY5QACrAg?rel=0\" frameborder=\"0\" gesture=\"media\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e \u003cbr\u003e\n\u003cfigure style=\"text-align: center;\"\u003e\n\u003cblockquote\u003e\n\u003cspan\u003e“\u003c\/span\u003eThe general flavor profile involved the following ingredients: a drop in noise floor, better bass definition and extension, more detail, more air and space, a bigger, more precise soundstage, and a smoother sound and presentation. ... When you go back into the wall via stock cables, you realize that life before power conditioning was grainy and flat.\u003cspan\u003e”\u003c\/span\u003e\n\u003c\/blockquote\u003e\n\u003cfigcaption class=\"source\"\u003e— GAUTAM RAJA, POSITIVE FEEDBACK, MARCH 2018\u003c\/figcaption\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigcaption class=\"source\"\u003e\u003cstrong\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/stereophile_recommended_2018_logo_e11530fc-bffb-491f-bd9d-e8da0c37b9be_compact.jpg?v=1535498081\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eRedefining the Science of Power Conditioning\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e“As with all good design, getting rid of the devil in AC power requires attention to every detail. Thanks, Garth!”\u003cbr\u003e—William E. Low, Founder and CEO, AudioQuest\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe science of AC power delivery is not a simple one; it demands focus, and the devil is in the details. In fact, the great increase in airborne and AC-line-transmitted radio signals, combined with overtaxed utility lines and the ever-increasing demands from high-definition audio\/video components, has rendered our utilities’ AC power a somewhat antiquated technology.\u003cbr\u003e\u003cbr\u003eWhere Alternating Current (AC) is concerned, we’re relying on a century-old technology created for incandescent lights and electric motors—technology that was certainly never meant to power the sophisticated analog and digital circuits used in today’s premium audio\/video systems. To properly accommodate the promise of today’s ever-increasing bandwidth and dynamic range, we must achieve extraordinarily low noise across a very wide range of frequencies.\u003cbr\u003e\u003cbr\u003eFurther, today’s power amplifiers are being taxed for instantaneous peak-current demand, even when they’re driven at modest volumes. Although we have seen a substantial increase in dynamics from much of our audio software, the loudspeakers we employ to reproduce them are often no more efficient than they were two to four decades ago. This places great demands on an amplifier’s power supply, as well as the source AC power supplying it.\u003cbr\u003e\u003cbr\u003eOur systems’ sensitive components need better alternating current—a fact that has resulted in a host of AC power conditioning, isolation transformer, regeneration amplifier, and battery back-up system topologies. Through differential sample tests and spectrum analysis, it can be proven that up to a third of a high-resolution (low-level) audio signal can be lost, masked, or highly distorted by the vast levels of noise riding along the AC power lines that feed our components. This noise couples into the signal circuitry as current noise and through AC ground, permanently distorting and\/or masking the source signal.\u003cbr\u003e\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eGiven that the stakes are so high, all sincere attempts to solve this problem must be applauded.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eOnce the audio\/video signal is gone, it’s gone forever…\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003eFor AudioQuest, honoring the source is never a matter of simply using premium “audiophile-grade parts” or relying on a proprietary technology—common approaches within our community. For years, we have all been witness to the same, seemingly endless audiophile debates: valves versus transistors; analog versus digital; can cables really make a difference?; and on and on. While we, too, can brag about our many unique technologies, we realize that true audio\/video optimization is never a matter of any one secret or exotic circuit. When it comes to noise filtering for AC power, many approaches can yield meaningful results. However, these approaches may also impart ringing, current compression, and non-linear distortions that can render the cure worse than the disease!\u003cbr\u003e\u003cbr\u003eThe Niagara 5000 features our patented AC Ground Noise- Dissipation System, the widest bandwidth-linearized AC filter in the industry, and our unique passive\/active Transient Power Correction Circuit. Boasting an instantaneous current reservoir of over 90 amps peak, the Niagara 5000 is specifically designed for today’s current-starved power amplifiers. Many AC power products featuring “high-current outlets” merely minimize current compression; the Niagara 5000 corrects it.\u003cbr\u003e\u003cbr\u003eThough it’s easy to tout a given technology, it’s quite another thing to create a solution that is consistent, holistic, functional, and that honors verifiable science. It’s not enough to reduce AC line noise and its associated distortions at just one octave, thus leaving vulnerable the adjacent octaves and octave partials to noise, resonant peaking, or insufficient noise reduction. Consistency is key. We should never accept superior resolution in one octave, only to suffer from masking effects a half-octave away and ringing artifacts two octaves from there. This is the principal criterion for AudioQuest’s Low-Z Power Noise-Dissipation System.\u003cbr\u003e\u003cbr\u003eThe Niagara 5000 represents over 20 years of exhaustive research and proven AC power products designed for audiophiles, broadcast engineers, and professional-audio applications. Every conceivable detail has been addressed: In the Niagara 5000, you’ll find optimized radio-frequency lead directionality, capacitor run-in forming technologies developed by Jet Propulsion Laboratories and NASA, and AC inlet and outlet contacts with heavy silver plating over extreme-purity copper, assuring the tightest grip possible.\u003cbr\u003e\u003cbr\u003eA great system is built from a solid foundation, and that foundation starts with power. With an AudioQuest Niagara 5000, you’ll experience for the first time the clarity, dimensionality, frequency extension, dynamic contrast, and grip your system has always been capable of delivering—if only the power had been right!\u003cbr\u003e\u003cbr\u003eWe welcome you to experience the Niagara 5000 and hear firsthand the remarkable results of highly optimized power management: startlingly deep silences, stunning dynamic freedom, outstanding retrieval of ambience cues, and gorgeous delineation of instruments and musicians in space. Once you’ve experienced it, it may seem so elegant, so logical, and so obvious that you find yourself wondering why it hadn’t been done before.\u003c\/p\u003e\n\u003ch4\u003ePLEASE NOTE: The Niagara 5000 does not ship with a power cord! We have plenty of great options to fit any budget so please call for more info!\u003c\/h4\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cstrong\u003eSurge suppression:\u003c\/strong\u003e Non-sacrificial (nothing to damage with repeated 6000 V\/3000 A input surge tests, which is the maximum that can survive through a building’s AC electrical panel)\u003cbr\u003e\u003cstrong\u003eExtreme voltage shutdown voltage:\u003c\/strong\u003e 140 VAC (will activate the main high-current relay to open within less than 0.25 second; automatically resets once the incoming power is within a safe range)\u003cbr\u003e\u003cstrong\u003eCommon-mode noise dissipation:\u003c\/strong\u003e In excess of 30 dB from 20 kHz to 100 MHz, linearized for dynamic (rising) line impedance with frequency (source) and 10 to 50 Ohm load, system current dependent\u003cbr\u003e\u003cstrong\u003eInput current maximum capacity:\u003c\/strong\u003e 20 A RMS (total).\u003cbr\u003e\u003cstrong\u003eUltra-linear noise-dissipation system:\u003c\/strong\u003e 4 Isolated groups – total (bank three through six)\u003cbr\u003e\u003cstrong\u003eNumber of AC outlets:\u003c\/strong\u003e 12 (4 high current\/transient power correction; 8 ultra-linear noise-dissipation system power)\u003cbr\u003e\u003cstrong\u003eTransient power correction:\u003c\/strong\u003e 90 A for 20-30 ms\u003cbr\u003e\u003cstrong\u003ePower consumption:\u003c\/strong\u003e Typically, less than 0.25 A at 120 VAC input, or with the power correction switched to standby setting\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 17.5” W x 5.24” H x 17.2” D (3-RU rack-mounting ears, optional)\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 38 lb\u003cbr\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"AudioQuest","offers":[{"title":"Default Title","offer_id":24907456784,"sku":"NIAGARA5000USA","price":6900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/niagara-5k-front.jpg?v=1741632331"},{"product_id":"primaluna-evo-100-tube-integrated-amp","title":"PrimaLuna EVO 100 Tube Integrated Amp","description":"\u003ch1\u003ePrimaLuna EVO 100 Tube Integrated Amp\u003c\/h1\u003e\n\u003cfigure style=\"text-align: center;\"\u003e\n\u003cblockquote\u003e\n\u003cspan\u003e“\u003c\/span\u003eDespite the EVO100's modest relative power of 40 W at 8 Ohms, the subjectively perceived value is much higher. And the quality of the device's power supply makes it difficult for it to be intimidated. This little guy knows how to talk about music without ever giving up a remarkable sweetness of timbres from one end of his bandwidth to the other. With delicacy, the top of the spectrum reveals a great ability to express all the nuances of an interpretation ... The medium is homogeneous, fluid and graceful, it seems to flow from this small machine like the clear water of the stream. The bass goes down very low.\u003cspan\u003e”\u003c\/span\u003e\n\u003c\/blockquote\u003e\n\u003cfigcaption class=\"source\"\u003e— VUMETRE (FRANCE), MAY-JUN 2019\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003eReplacing beloved the PrimaLuna Classic, this entry into the EVO series offers an integrated with astonishing bandwidth and musicality, and a smaller, lighter footprint than the others in the series.\u003c\/p\u003e\n\u003ch3\u003e\u003c\/h3\u003e","brand":"PrimaLuna","offers":[{"title":"Black","offer_id":21413380390972,"sku":"PE100INT-B","price":3295.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":21413380423740,"sku":"PE100INT-S","price":3295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/160b_-_PrimaLuna_EVO_100_Tube_Integrated_Amplifier_-_black_-_front_-_white_background_1024x1024_7ea79ae4-4baf-41e8-b7f3-42e2ad53be7c.jpg?v=1741631878"},{"product_id":"pathos-kratos-tube-hybrid-integrated-amplifier","title":"Pathos Kratos Tube Hybrid Integrated Amplifier","description":"\u003ch1\u003ePathos Kratos Tube Hybrid Integrated Amplifier\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure style=\"text-align: center;\"\u003e\n\u003cblockquote\u003e\n\u003cspan\u003e“\u003c\/span\u003eIt’s hard not be drawn in by the Pathos Kratos. It’s powerful, yet can sound as refined and as elegant as any tiny valve amplifier. It’s warm, yet not soft and soggy sounding. It fills the room with sound, driving ‘difficult’ speakers with ease and making it more natural to drive loudspeakers to seem like they just got a bit bigger and more powerful.\u003cspan\u003e”\u003c\/span\u003e\n\u003c\/blockquote\u003e\n\u003cfigcaption class=\"source\"\u003e— ALAN SIRCOM, HI-FI+\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eA class-A Tung-Sol ECC803 input stage meets a 200 Wpc MOSFET output stage\u003c\/h3\u003e\n\u003cp\u003eIn Greek mythology, Kratos is the god of strength, might, and power. The Pathos Kratos is based on Pathos’ famous hybrid circuit featuring tubes in the preamp stage, and a MOSFET final stage, offering 200 W per channel. \u003c\/p\u003e\n\u003cp\u003eThe design electrically separates the pre and power stages, with the preamplification circuit working in in pure class-A. The Tung-Sol ECC803S tubes offer a warm, deep, dynamic sound. The final MOSFET stage in class AB is strongly polarized in class A, and drives any loudspeaker with power and grace. \u003c\/p\u003e\n\u003cp\u003eKratos is also headphone amplifier with dedicated circuitry (2 W @ 32 Ω). The amp can be upgraded with an optional DAC card. \u003c\/p\u003e\n\u003ch4\u003eIn-House Manufacturing and Design\u003c\/h4\u003e\n\u003cp\u003eFrom the wood panel to the PCBs to the chassis, everything at Pathos is either manufactured in-house or sourced from the Vicenza area. \u003c\/p\u003e\n\u003cp\u003eFor example, to make the wood front panel, Pathos buys an entire padouk tree trunk, which is cut into planks in-house, and the final pieces are hand-polished by the son of the Pathos owner himself.\u003c\/p\u003e\n\u003cp\u003eThe panel may not contribute to the sound, but this approach says everything about the great sonics you do hear. Having control of the entire manufacturing process from start to finish means that the Pathos InPol2 is the very best amp it can possibly be at its price-point. These are the very best amps Kevin has heard, and it is Pathos that he has picked for his reference system at home.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Hybrid stereo amplifier, fully balanced.\u003cbr\u003e\u003cstrong\u003ePreamplifier stage:\u003c\/strong\u003e tubes, class A, 2 x TungSol ECC803S\u003cbr\u003e\u003cstrong\u003eFinal stage:\u003c\/strong\u003e MOSFET, bridge configuration, class AB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput power:\u003c\/strong\u003e 2 x 200 W RMS @ 8 Ω, 2 x 350 W RMS @ 4 Ω\u003cbr\u003e\u003cstrong\u003eMax input voltage:\u003c\/strong\u003e 5 V RMS\u003cbr\u003e\u003cstrong\u003eInput sensitivity:\u003c\/strong\u003e 0.7 V RMS\u003cbr\u003e\u003cstrong\u003eInput impedance:\u003c\/strong\u003e 47K Ohm\u003cbr\u003e\u003cstrong\u003ePre out gain:\u003c\/strong\u003e 6 dB\u003cbr\u003e\u003cstrong\u003eGain:\u003c\/strong\u003e 36 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnections\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eAnalogue line inputs:\u003c\/strong\u003e 2 x balanced XLR, 5 x RCA, 1 x balanced XLR HT bypass\u003cbr\u003e\u003cstrong\u003eOptional inputs:\u003c\/strong\u003e HiDac Mk2\u003cbr\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 x pre out stereo unbalanced RCA, 1 x pre out stereo balanced XLR\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeadphone Specifications\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eOutput power:\u003c\/strong\u003e 3.3 W @ 16 Ω , 2 W @ 32 Ω\u003cbr\u003e\u003cstrong\u003eMax output level:\u003c\/strong\u003e 10 V RMS\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 16.9\" (D) x 20.8\" (W) x 7.67\" (H)\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 88 lb (40 kg)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Pathos","offers":[{"title":"Padouk Wood","offer_id":22482015944764,"sku":"PA-KRTS-P","price":10995.0,"currency_code":"USD","in_stock":true},{"title":"Matte Metallic Black","offer_id":28821339832380,"sku":"PA-KRTS-B","price":10995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/side_1_2048x2048_897fa5e1-50ea-48bb-9fdd-5795b26123d5.jpg?v=1741631750"},{"product_id":"dr-feickert-trio-se-upscale-audio-exclusive-turntable","title":"Dr. Feickert Trio SE Upscale Audio Exclusive Turntable","description":"\u003ch1\u003eDr. Feickert Trio SE, An Upscale Exclusive\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003ePerformance of the $15,495 Firebird, but without two tonearm mounts! So good Kevin has one in his own sound room!  \u003c\/h4\u003e\n\u003ch4\u003eSPECIALLY MADE JUST FOR UPSCALE AUDIO, THE TRIO SE IS AN UPDATED VENTI WITH A WALNUT FINISH AND WITH SPECIAL ISOLATION AND DAMPING, BUT AT THE SAME COST AS THE VENTI. \u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eExtremely limited stock--jump on this one now!\u003c\/h4\u003e\n\u003cp\u003eDo you want the technology of the Firebird but don't need multiple tonearms?\u003c\/p\u003e\n\u003cp\u003eThe limited-edition Dr. Feickert Venti was such a good turntable that we kept clamoring for more, long after it was sold out. But Kevin wasn't content with simply bringing the Venti back. \"Let's make it even better!\"\u003cbr\u003e\u003cbr\u003eSo the Venti is back in a beautiful walnut finish, with a number of improvements (below), in a special edition we call the Trio. The three motors arranged in an equilateral triangle around the platter reduce drag force on the bearing, and cancel out forces on the platter, offering a dead-silent background, fine detail, and tremendous macro- and micro-dynamics.\u003cbr\u003e\u003cbr\u003eThe design of the armboard with built-in protractor makes precise tonearm setup easy, and we have bundle pricing with some of the world's greatest tonearms--see the options above.\u003c\/p\u003e\n\u003ch3\u003eUpdates over Venti\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModified and enhanced suspension and decoupling of the motors using a softer rubber compound with modified dimensions\u003c\/li\u003e\n\u003cli\u003eNewly designed steel bed for the bearing with less sensitivity to motor interference \u003c\/li\u003e\n\u003cli\u003eModified chassis grounding\u003c\/li\u003e\n\u003cli\u003eSpike feet mounted and coupled to the chassis, allowing better adjustability and less mounting-platform noise\u003c\/li\u003e\n\u003cli\u003eLarger cutout for the sliding base now allows up to 315 mm pivot-spindle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WDH):\u003c\/strong\u003e 18.5\" x 16\" x 10\" (with Kuzma 4Point, height may vary with tonearm selection)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping weight:\u003c\/strong\u003e 77 lbs\u003c\/p\u003e","brand":"Dr. Feickert Analogue","offers":[{"title":"Default Title","offer_id":31997819453500,"sku":"DF TRIO-SE","price":7495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/TrioSE_4_jpg.webp?v=1741631385"},{"product_id":"chord-qutest-dac","title":"Chord Qutest DAC","description":"\u003ch1\u003eChord Qutest DAC\u003c\/h1\u003e\n\u003ch3\u003ePocket size but rock-solid and high-end FPGA DAC with multiple filters.\u003c\/h3\u003e\n\u003cp\u003eQutest is Chord's “pure” DAC (it does not contain headphone amplification or rechargeable batteries like some of its range stablemates), and is the latest evolution of Chord's most affordable standalone DAC, the multi-award-winning 2Qute. No feature has been overlooked in search of improvements, both functional and sonic. \u003cbr\u003e\u003cbr\u003eQutest is based on Chord's award-winning proprietary FPGA technology developed for the class-leading Hugo 2 DAC\/headphone amp, giving it proven class-leading technical and sonic performance. It features a galvanically isolated USB-B, and optical and coaxial digital inputs. This also brings the Qutest in line with the house sound of Chord DACs—for those who know, that includes depth, warmth, width, and soundstage layering like you wouldn’t believe. \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eSolid Aluminum Billet\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe Qutest chassis is all-new, too. It has significantly greater mass than its predecessor and has been precision-machined from solid aircraft-grade aluminum billet. The Qutest PCB nestles in a shallow cavity in the solid aluminum chassis, giving the circuit board greater protection within the casework, and additional isolation from external vibration compared to previous designs. While the Qutest is indeed quite cute, it in no way feels cheap. This small but mighty package’s aluminum chassis feels rock solid and high-end despite its near pocket-size dimensions. \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eLots of Features\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eQutest offers Hugo 2’s proprietary user-selectable frequency-shaping filters and input selection controls, available via two fascia-mounted spheres, introducing useful flexibility. It also features RCA analog outputs for connection to integrated amplifiers, preamps, and headphone amps, plus high-resolution dual-data digital inputs for connection to future Chord Electronics products.\u003cbr\u003e\u003cbr\u003eWe find these selectable features add a lot of flexibility to the Qutest. Though subtle, the filters do change perceptions of transient dynamics, detail and soundstage, and we think there’s a little something for everyone here, from slight warming effects to clean and clear. Best of all, it’s done with Chord’s signature clarity and transparency, yet with no sacrifice of musicality even on the most linear filter settings. \u003cbr\u003e\u003cbr\u003eA further new feature is a user-selectable output voltage available in 1, 2, and 3 V RMS outputs for flexible connectivity with a wide range of devices. This is another great option as preamps from different eras may expect different voltages, so a vintage preamp, which may have a higher input sensitivity designed for phono, may enjoy the 1 V setting. Conversely, a more modern, lower gain preamp with a lower input sensitivity may like the 2 V or 3 V options, especially if it has tubes, which tend to benefit from more voltage gain.\u003cbr\u003e\u003cbr\u003eThe point is that the Qutest gives you the flexibility to match the output to your accompanying volume device, an invaluable and oft-overlooked capability. 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If you are building a reference system and after the very lowest noise and highest detail, Aurender or Lumin might be better for you. But if you want a hugely capable system that's also fun to use and becomes the center of your living room, then HiFi Rose streamers and streaming DACs are a natural choice.\u003c\/p\u003e\n\u003ch4\u003eManufacturer's Information\u003c\/h4\u003e\n\u003cp\u003eHiFi Rose has included some serious technology from higher level streamers, while saving money by having a smaller screen and non-reference-grade power supply. Even so, you get a toroidal linear PSU and a high-precision femto clock, as well as balanced outs and dedicated headphone out. \u003c\/p\u003e\n\u003cp\u003eThe RS451 applies two ES9027PRO DACs on completely separated analog paths—one dedicated to the pre-out section and one to the headphone section—with independent power supplies and grounding to suppress interference and crosstalk. Each DAC uses a 4-channel parallel configuration per stereo output to push noise lower and dynamic range higher, locked to a highly precise femto clock.\u003c\/p\u003e\n\u003cp\u003eThe analog stage incorporates the ROSE NRA™ (Noise Reduction Analog) filter for a flat response down into the very low frequencies, preserving original signal information from high-resolution sources.\u003c\/p\u003e\n\u003cp\u003eThe headphone architecture uses four high-output amplifier ICs in a parallel configuration, delivering strong, stable drive into a wide range of loads, including high-impedance headphones exceeding 600 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Its redesigned 10\" active driver and 12\" passive radiator deliver faster response, greater travel, and bass that is louder, richer, and more effortless than ever before.\u003c\/p\u003e\n\u003cp\u003eA wider, lower-profile cabinet enhances scale and presence, making the S\/550 feel larger than its footprint suggests. Compact in size but bold in performance, it redefines what a mid-size subwoofer can achieve.\u003c\/p\u003e\n\u003cp\u003eEach unit comes finished in Piano Black or White Gloss with a matching cloth grille (black or white). For an even more refined look, a premium sculpted wood grille is available. As with all Serie S models, the S\/550 is Airship Direct™ ready, ensuring wireless freedom without sacrificing speed or detail.\u003c\/p\u003e\n\u003ch4\u003eThe Upscale View\u003c\/h4\u003e\n\u003cp\u003eAs the entry point into Serie S, the outgoing S\/510 carried the speed and agility of Serie T\/X, but with added bass extension. This involved the use of lighter and stiffer drivers and faster input filters, and a lot of work went into getting this elusive combination perfect. We're excited that the S\/550 is even faster, lighter, and more powerful. \u003c\/p\u003e\n\u003ch4\u003eWhat’s New in Serie S\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFaster, lighter drivers with carbon-fibre refinements\u003c\/li\u003e\n\u003cli\u003eRedesigned passive radiators with greater travel\u003c\/li\u003e\n\u003cli\u003eAmplifiers with expanded headroom and control\u003c\/li\u003e\n\u003cli\u003eWider, lower cabinets for improved scale and presence\u003c\/li\u003e\n\u003cli\u003eNew grille options: cloth (standard) or sculpted premium wood (optional)\u003c\/li\u003e\n\u003cli\u003eAirship Direct™ wireless compatibility across the range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDrivers:\u003c\/strong\u003e 10\" CarbonAlloy active, 12\" carbon-infused passive\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmplifier:\u003c\/strong\u003e 550 W class-D\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCabinet:\u003c\/strong\u003e Wider, lower profile design for improved presence\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow Frequency Extension (-6 dB):\u003c\/strong\u003e 19 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWireless:\u003c\/strong\u003e Airship Direct™ ready\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrilles:\u003c\/strong\u003e Standard cloth (black or white); optional premium wood grille\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinishes:\u003c\/strong\u003e Piano Black, White Gloss\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WHD):\u003c\/strong\u003e 15.7\" x 16\" x 18.25\" (400 x 410 x 464 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 70 lb. 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Reserve it now!\u003c\/p\u003e\n\u003cp\u003eThe 212 Black Label is REL’s most commanding Serie S subwoofer, designed to anchor large-scale home theaters and drive reference two-channel systems. Its triple-plane cabinet design houses dual 12\" active drivers and dual 12\" passive radiators, delivering stunning scale and unmatched authority.\u003c\/p\u003e\n\u003cp\u003ePowered by a 1000 W linear Class D amplifier, the 212 Black Label combines massive output with speed, nuance, and control. Whether filling a dedicated theatre or a world-class stereo system, it maintains precision and refinement at every level.\u003c\/p\u003e\n\u003cp\u003eFinished in Piano Black and supplied with a matching black cloth grille, it also offers an optional premium wood grille. 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In the 212, the active drivers fire forwards, with the lower one getting more reinforcement from the floor, and the upper \"floating\" one being able to better convey nuance. The passive down-firing driver does \"room crawling\" bass which emphasizes the lowest frequencies, and locks down the bass line, and also gives you the sense of being in very large spaces, for example, with recordings in churches or auditoriums. 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At its core is a 12\" all carbon-fibre driver paired with a re-engineered passive radiator for breathtaking articulation and depth. Its wider, lower-profile cabinet delivers improved scale and presence while blending seamlessly into refined spaces.\u003c\/p\u003e\n\u003cp\u003eEvery Carbon Special Black Label comes fitted with sculpted premium wood grilles as standard, both functional and beautiful. Optional cloth grilles are available for a more understated look. As with all Serie S models, it is Airship Direct™ ready, offering wireless freedom without sacrificing speed or detail.\u003c\/p\u003e\n\u003ch4\u003eThe Upscale View\u003c\/h4\u003e\n\u003cp\u003eWith the outgoing Serie S, the Carbon Special was a limited, souped-up S\/812 that was so good, the REL decided to make it the permanent pinnacle of the range. It is the only one of Serie S that uses the all-carbon driver from the Reference Series. This is a driver that combines speed and stiffness like nothing else. The forces on a fast-moving 12\" bass driver are immense, and most drivers flutter like flags in the wind (on a smaller scale, of course) when outputting deep bass at high volume. Either that or they are thick and heavy to withstand these forces. \u003c\/p\u003e\n\u003cp\u003eREL's secret is to use extremely expensive carbon fiber technology to create a driver that is both light and stiff, and combine that with fast input filters to ensure that every bit of performance is being squeezed out.\u003c\/p\u003e\n\u003ch4\u003eWhat’s New in Serie S\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFaster, lighter drivers with carbon-fibre refinements\u003c\/li\u003e\n\u003cli\u003eRedesigned passive radiators with greater travel\u003c\/li\u003e\n\u003cli\u003eAmplifiers with expanded headroom and control\u003c\/li\u003e\n\u003cli\u003eWider, lower cabinets for improved scale and presence\u003c\/li\u003e\n\u003cli\u003eNew grille options: Sculpted premium wood (standard), Cloth (optional)\u003c\/li\u003e\n\u003cli\u003eAirship Direct™ wireless compatibility across the range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDrivers:\u003c\/strong\u003e 12\" pure carbon-fibre cone, 12\" passive radiator\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmplifier:\u003c\/strong\u003e 900 W class-D\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCabinet:\u003c\/strong\u003e Wider, lower profile for greater presence\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow Frequency Extension (-6 dB):\u003c\/strong\u003e 19 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWireless:\u003c\/strong\u003e Airship Direct™ ready\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrilles:\u003c\/strong\u003e Premium wood (standard); optional cloth grille\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Piano Black\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WHD):\u003c\/strong\u003e 17\" x 18\" x 21.25\" (430 x 455 x 539 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 85.3 lb. (38.7 kg)\u003c\/p\u003e","brand":"REL","offers":[{"title":"Default Title","offer_id":51725084262584,"sku":"CRBN-SPCL-BL","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/REL_CarbonSpecialBlackLabel_ThreeQuarter.jpg?v=1758300578"},{"product_id":"phasemation-ea-550-mono-phono-eq-amplifier-pair","title":"Phasemation EA-550 Mono Phono EQ Amplifier (Pair)","description":"\u003ch1\u003ePhasemation EA-550 Phono Amplifier (Dual-Chassis \/ Separate Unit)\u003c\/h1\u003e\n\u003ch3\u003eAll-stage symmetrical non-feedback phonostage in two monaural boxes, with balanced inputs, split chassis, and refined MC transformer\u003c\/h3\u003e\n\u003cp\u003eFor the EA-550, Phasemation pushes the dual-mono idea to the logical conclusion by having two separate units for each channel. It is a fully discrete, all-stage symmetrical non-feedback phonostage, and its construction and circuitry aim to reveal the fullest realism, dynamics, and expressive nuance from vinyl playback.\u003c\/p\u003e\n\u003cp\u003eThe chassis design features a 10 mm thick slanted aluminum front panel, 1.6 mm copper-plated steel base and cover, and heavy metal feet to suppress vibration and magnetic distortion. Each channel has its own rigid housing and power supply. A newly designed built-in MC transformer with split winding uses PC-TripleC copper for the secondary winding, aimed at improving signal integrity.\u003c\/p\u003e\n\u003cp\u003eOn the functional side, it provides three input terminals (MM\/MC switching for each), with Inputs 1 and 2 supporting balanced (XLR) input. A 2nd-order (two-stage) CR low-cut filter is included to suppress subsonic noise and protect speaker motion. Users can switch between three playback curves (RIAA stereo, DECCA Mono, and Columbia Mono. A 30-second degauss circuit demagnetizes MC cartridges with metal cores.\u003c\/p\u003e\n\u003cp\u003eThe EA-550 has been awarded multiple honors including the Ongen Publishing Audio Excellence Award 2020 (Gold \u0026amp; Silver), MJ Technology of the Year 2019 (Honorable Mention), and Stereo magazine Best Buy Components 2020 (Phono equalizer over ¥500,000, 3rd place).\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-chassis, monaural boxed design with independent L\/R units\u003c\/li\u003e\n\u003cli\u003eBuilt-in MC transformer with split winding, using PC-TripleC copper on secondary\u003c\/li\u003e\n\u003cli\u003eThree inputs, with MM\/MC switching for each; Inputs 1 \u0026amp; 2 support balanced (XLR) operation\u003c\/li\u003e\n\u003cli\u003e2nd-order CR low-cut filter (non-feedback) to attenuate subsonics without degrading music\u003c\/li\u003e\n\u003cli\u003ePlayback curve switching: RIAA (stereo), Mono1 (DECCA), Mono2 (Columbia)\u003c\/li\u003e\n\u003cli\u003eDegauss circuit (~30 s) for MC cartridges with metal cores\u003c\/li\u003e\n\u003cli\u003eRIAA network: 1% metal-film resistors and silvered mica capacitors\u003c\/li\u003e\n\u003cli\u003eSignal path: ELNA SILMIC electrolytic capacitors, metal-film resistors\u003c\/li\u003e\n\u003cli\u003ePower circuit: Rohm SiC diodes, Nichicon high-grade electrolytics, ELNA SILMIC II decoupling caps\u003c\/li\u003e\n\u003cli\u003eLow-noise Zener diodes and shunt regulators (no feedback) for fast, ultra-low noise power\u003c\/li\u003e\n\u003cli\u003eFour R-core transformers (positive\/negative for each channel) with low leakage flux\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eForm:\u003c\/strong\u003e V-I \/ I-V conversion type full symmetrical non-feedback equalizing amplifier\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInputs:\u003c\/strong\u003e MM, MC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Sensitivity (MM\/MC):\u003c\/strong\u003e 2.5 mV, 0.13 mV\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable Cartridge Output Impedance (MM\/MC):\u003c\/strong\u003e 47 kΩ or less; 1.5 to 40 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain (MM\/MC):\u003c\/strong\u003e 38 dB, 64 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Equivalent S\/N Ratio (MM\/MC):\u003c\/strong\u003e −120 dBV, −140 dBV\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRated Output Voltage (1 kHz):\u003c\/strong\u003e 200 mV\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRIAA Curve Tolerance (20 Hz–20 kHz):\u003c\/strong\u003e ±0.5 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 10 W (per channel, 100 V 50-60 Hz)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (Each, WHD):\u003c\/strong\u003e 8.31\" x 3.66\" x 14.17\" (211 x 93 x 360 mm) \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight (Each):\u003c\/strong\u003e 12.1 lb. (5.5 kg) \u003c\/p\u003e","brand":"Phasemation","offers":[{"title":"Default Title","offer_id":51836579971256,"sku":"EA-550","price":8575.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/EA_550_front_rgb.png?v=1763667485"},{"product_id":"phasemation-sa-1500-integrated-amplifier","title":"Phasemation SA-1500 Integrated Amplifier","description":"\u003ch1\u003ePhasemation SA-1500 Integrated Amplifier\u003c\/h1\u003e\n\u003ch3\u003eA class-A 9 W SET with 2 x 6SN7 and 2 x 300B in a dual-mono configuration\u003c\/h3\u003e\n\u003cp\u003eSingle-ended triode amplifiers are an audiophile Holy Grail, and 300B SETs even more sought after. Add to this, beautiful high-end Japanese design, and you have one of the most desirable amplifiers in the world. \u003c\/p\u003e\n\u003cp\u003eFollowing the powerful MA-1500 monoblock that uses the revered 300B vacuum tube, Phasemation launched a 300B stereo integrated amp in 2024.  The SA-1500 is a pure class-A self-biased design with an output power of 9 W.\u003c\/p\u003e\n\u003cp\u003ePhasemation made four \"commitments\" when they designed the SA-1500. Commitment 1 was that it must be pure class-A, prioritizing sound quality regardless of the effort it takes. As Phasemation puts it, \"Class-A sound is pure, with a delicate expression, and has vast audio advantages due to its low distortion.\" \u003c\/p\u003e\n\u003cp\u003eCommitment 2 was to not use negative feedback, as Phasemation's extensive listening tests showed that zero feedback made for a more dynamic and expressive sound.\u003c\/p\u003e\n\u003cp\u003eCommitment 3 required the use of triode tubes. Phasemation believes there is nothing nostalgic about the sound of vacuum tubes, and that it brings a profound sound impact that can be enjoyed even with modern music. 9 W may not sound like much, and is not much with solid-state, but with tubes and their huge current delivery, 9 W is huge, and can drive a range of loudspeakers.\u003c\/p\u003e\n\u003cp\u003eFinally, Commitment 4 was to follow a monaural design structure. By separating left and right channels, Phasemation keeps crosstalk and other cross-channel effects to a minimum, resulting in excellent imaging and stereo separation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo feedback design for rich, direct, dynamic sound\u003c\/li\u003e\n\u003cli\u003eIndividual left and right output transformers made by Lundhal of Sweden\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndependent left and right choke transformers for less crosstalk \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDirect mode allows for use as a power amp\u003c\/li\u003e\n\u003cli\u003eLow-noise, anti-vibration design featuring thick glass and rigid aluminum\u003c\/li\u003e\n\u003cli\u003eExtensive shielding on power transformer, choke, and output transformer\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUses 6SN7 in the first gain stage, with the 300B as the output tube\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003e Input Impedance: \u003c\/b\u003e 47 kΩ\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e Gain: \u003c\/b\u003e 30 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Power (THD 5%): \u003c\/b\u003e 9 W \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e Output Impedance: \u003c\/b\u003e 4–8 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e Power Consumption: \u003c\/b\u003e 140 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e Dimensions (W x H x D): \u003c\/b\u003e 16.93\" x 9.45\" x 14.96\" (430 x 240 x 380 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e Weight: \u003c\/b\u003e 39.68 lb. (18 kg)\u003c\/p\u003e","brand":"Phasemation","offers":[{"title":"Default Title","offer_id":51836580200632,"sku":"SA-1500","price":19975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/SA-1500_Front.png?v=1763665398"},{"product_id":"meze-audio-99-classics-v2-closed-back-headphones","title":"Meze Audio 99 Classics V2 Closed Back Headphones","description":"\u003ch1\u003eMeze Audio 99 Classics V2\u003c\/h1\u003e\n\u003ch3\u003eClosed-back dynamic headphones with 40 mm drivers, solid walnut ear cups, and refined 2nd-gen tuning for improved tonal balance and imaging\u003c\/h3\u003e\n\u003cp\u003eThe second-generation Meze Audio 99 Classics preserve the signature warmth and craftsmanship of the original while introducing acoustic, ergonomic, and mechanical updates. The solid walnut ear cups, steel headband, and self-adjusting vegan leather strap provide a comfortable and timeless design built to last. Each pair is hand-assembled with matched walnut cups for consistent acoustic performance.\u003c\/p\u003e\n\u003cp\u003eThe new tuning offers a more neutral balance, with improved bass control, higher clarity, and better driver matching between channels. Updates include reworked cup volume, new damping materials, redesigned ear pads, and a tuned bass port in the jack shell. Together, these refinements improve linearity and spatial precision while retaining the musicality that made the first-generation model so beloved.\u003c\/p\u003e\n\u003cp\u003eConnectivity and usability are modernized as well. Dual 3.5 mm sockets now accept a wider range of cables, and the included OFC cable is Kevlar-reinforced for durability. A compact USB-C DAC\/amp adapter is provided for modern devices without a headphone jack, ensuring the 99 Classics remain plug-and-play across all platforms.\u003c\/p\u003e\n\u003ch3\u003eIncluded Accessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHard EVA carrying case\u003c\/li\u003e\n\u003cli\u003eDetachable 1.2 m cable with in-line microphone and remote\u003c\/li\u003e\n\u003cli\u003eDetachable 3 m OFC cable\u003c\/li\u003e\n\u003cli\u003eUSB-C DAC\/amp adapter\u003c\/li\u003e\n\u003cli\u003e6.3 mm adapter\u003c\/li\u003e\n\u003cli\u003eAirplane adapter\u003c\/li\u003e\n\u003cli\u003eCable pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eDriver Type:\u003c\/b\u003e Dynamic\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDriver Size:\u003c\/b\u003e 40 mm\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Range:\u003c\/b\u003e 15 Hz–25 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSensitivity:\u003c\/b\u003e 103 dB \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImpedance:\u003c\/b\u003e 16 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTotal Harmonic Distortion:\u003c\/b\u003e \u0026lt;0.% at 1 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Connector:\u003c\/b\u003e Dual 3.5 mm TS jack\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEar Cups:\u003c\/b\u003e Solid walnut wood\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 10.2 oz. (290 g)\u003c\/p\u003e","brand":"Meze Audio","offers":[{"title":"Default Title","offer_id":52221192634552,"sku":"MEZ-99V2","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/Meze-Audio-99-Classics-V2-headphone-01copy_webp.png?v=1761851317"},{"product_id":"chord-mojo-2-portable-dac-headphone-amplifier-2025-model","title":"Chord Mojo 2 Portable DAC \/ Headphone Amplifier (2025 Model)","description":"\u003ch1\u003eChord Mojo 2 Portable DAC \/ Headphone Amplifier (2025 Model)\u003c\/h1\u003e\n\u003ch3\u003eFor 2025, Chord adds USB-C charging and a 4.4 mm headphone jack to the hugely accomplished Mojo 2\u003c\/h3\u003e\n\u003cp\u003eThe original Mojo created the high-end portable DAC genre, with people loving that their home, office, and on-the-road setups could all share the same DAC and sound good. \u003c\/p\u003e\n\u003cp\u003eSeven years later, Chord revisited the Mojo, and the company’s long-standing digital design consultant, Rob Watts,  reimagined and reengineered the award-winning original with ground-breaking, world-first technology. Now, Chord has added a couple of real-world updates: USB-C charging and a balanced 4.4 mm headphone jack. (Note, it is balanced only at the connector, not internally fully balanced.)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLossless DSP\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe  Mojo 2 offers revolutionary lossless digital signal processing called UHD DSP. It allows for tone adjustments across the frequency range, without any degradation in sound quality. This means you can compensate for a huge range of headphones, source components, and file types, and ensure you are listening to the best possible sound.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-top: 10px; margin-bottom: 10px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MojoLife1_931b6a77-3c1e-487b-bc22-1bf2ea213535.jpg?v=1643064459\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eInputs and Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChord's signature control spheres offer access to power and volume, and a new (fourth) control sphere offers intuitive menu control. This offers access to a mute function, four-setting crossfeed adjustment, and the UHD DSP controls. \u003c\/p\u003e\n\u003cp\u003eThe Mojo 2 has four inputs: USB-C, optical, coax, and micro-USB. A menu option allows switching between USB-C charging and data. The dual data input is offered for the Chord M Scaler. A 3.5 mm mini-jack headphone and 4.4 mm headphone output are provided.  \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGreat Battery Management\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mojo 2's battery charging system is FPGA based, bringing much faster charging rates, with a huge 75% reduction in power loss for cooler, more efficient charging. Capacity is up by 9%, resulting in better efficiency and improved battery life, which is now better than eight hours.\u003c\/p\u003e\n\u003cp\u003eThe Mojo 2 also offers an ‘Intelligent Desktop Mode’ which offers battery-free operation without any losses in sound quality, plus improved filtering and isolation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImproved transparency\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMojo 2 is now DC-coupled with a digital DC servo. It benefits from an improved WTA (Watts Transient Aligned) filter, now offering 40,960 taps (the technical indicator of how complex the interpolation filter is), using 40 DSP cores. Additionally, an improved noise-shaper offers greater depth and detail perception, plus improvements to the 4e Pulse Array DAC introduce lower distortion and out-of-band noise. Greater neutrality has also been achieved, thanks to the elimination of coupling capacitors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMore On UHD DSP\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eProprietary processing technology uses a 104-bit custom DSP core running at 705\/768 kHz. No other audio DSP offers the same accuracy. By using 104 bits plus extensive internal noise-shaping, Mojo 2 can deliver complete transparency by preserving the filtering of ultra-small signals.\u003c\/p\u003e\n\u003cp\u003eThe unique UHD DSP enables fine-tuning across the full frequency range with 18 steps of adjustment per frequency banding: lower bass, mid-bass, lower treble, and high treble. The volume control range has also been improved from +18 dB to -108 dB, and now benefits from two distinct operational ranges: low and high volume. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA new four-setting crossfeed function, also DSP-controlled, brings speaker-like spatial effects for flexible headphone listening. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eClass-Leading Build Quality\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mojo 2 is designed, engineered, and handmade in the UK. The high-grade, bead-blasted aluminum casework is finished with a high-quality black anodize. Control is via Chord's signature polychromatic polycarbonate control spheres.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-top: 10px; margin-bottom: 10px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MojoLife2_615a1956-8fae-48d8-9353-32345e75bbc5.jpg?v=1643064426\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eGo Wireless with Poly\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMojo 2 is fully compatible with the \u003ca href=\"https:\/\/upscaleaudio.com\/products\/chord-poly-wifi-bluetooth-module-for-mojo-dac\"\u003ePoly\u003c\/a\u003e streamer\/server, enabling high-resolution streaming and up to 2 TB of solid-state library storage and playback when using the microSD card slot. \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorld’s first lossless DSP: unrivaled compatibility with any headphone.\u003c\/li\u003e\n\u003cli\u003eNew USB-C data input\u003c\/li\u003e\n\u003cli\u003eNew menu system and button: Easy navigation of the new UHD DSP features\u003c\/li\u003e\n\u003cli\u003eBetter battery\/charging: FPGA-management; faster, cooler charging; capacity up 9%\u003c\/li\u003e\n\u003cli\u003eBetter sound: DC-coupled, digital DC servo, improved proprietary WTA filter, 40,960 taps and 40 DSP cores, improved noise-shaper, improved 4e Pulse Array DAC, plus more neutral\u003c\/li\u003e\n\u003cli\u003eUK designed, engineered, and built: Class-leading technical performance and build quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 x optical, 1 x coax, 1 x USB-C, 1 x Micro USB \u003c\/p\u003e","brand":"Chord Electronics","offers":[{"title":"Default Title","offer_id":52362969088184,"sku":"MOJO2B","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/Mojo2_4.4_cutoutoututs.png?v=1766002527"},{"product_id":"meze-audio-strada-dynamic-driver-closed-back-headphones","title":"Meze Audio Strada Dynamic Driver Closed Back Headphones","description":"\u003ch1\u003eMeze Audio STRADA Closed-Back Dynamic Headphones\u003c\/h1\u003e\n\u003ch3\u003eA closed-back design focused on tonal balance, with magnesium and zinc frame, Macassar ebony and leather ear cups, and a stunning, hand-painted metallic green finish\u003c\/h3\u003e\n\u003cp\u003eMeet the STRADA: a pair of closed-back dynamic headphones created for listeners who value balance, texture, and emotional immediacy as much as technical precision. STRADA presents music with a full-bodied sound that draws you in without exaggeration, delivering clarity and nuance while preserving a relaxed, organic character.\u003c\/p\u003e\n\u003cp\u003eAt the heart of STRADA is a 50 mm dynamic driver built around a bio-cellulose composite dome with a beryllium-coated torus. This carefully tuned driver architecture provides speed and control alongside tonal richness, allowing fine detail and dynamic shading to emerge without sounding etched or fatiguing. The closed-back construction offers excellent noise isolation while maintaining a convincing sense of space and depth.\u003c\/p\u003e\n\u003cp\u003eMaterials and ergonomics are treated with equal seriousness. The chassis combines magnesium and zinc with Macassar ebony wood and leather, resulting in a structure that is both acoustically inert and visually distinctive. Each pair is hand-painted in-house in a deep green finish infused with subtle metallic particles, giving STRADA a refined presence that avoids flashiness. A world-class ergonomic design, paired with a magnetic ear-pad mounting system, ensures long-term comfort and straightforward maintenance.\u003c\/p\u003e\n\u003ch3\u003eDesign and Features\u003c\/h3\u003e\n\u003cp\u003eSTRADA is designed to be portable and easy to drive, making it equally at home on a desktop system or paired with a high-quality portable source. Two dual-twisted, Kevlar-wrapped OFC cables are included, terminated in 3.5 mm and 4.4 mm connections for broad system compatibility. Every component is fully serviceable, reinforcing STRADA’s long-term value and sustainability.\u003c\/p\u003e\n\u003cp\u003eFrom its balanced sound signature to its thoughtful construction, STRADA is built as a lifelong listening instrument—one that prioritizes musical connection, comfort, and enduring craftsmanship.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eDriver Type:\u003c\/b\u003e Dynamic\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Connector:\u003c\/b\u003e Dual 3.5 mm TS jack\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDriver Size:\u003c\/b\u003e 50 mm\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTotal Harmonic Distortion:\u003c\/b\u003e \u0026lt;0.1% at 1 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Range:\u003c\/b\u003e 5 Hz–30 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImpedance:\u003c\/b\u003e 40 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSensitivity:\u003c\/b\u003e 111 dB SPL\/mW at 1 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 330 g (11.64 oz)\u003c\/p\u003e","brand":"Meze Audio","offers":[{"title":"Default Title","offer_id":52488037367992,"sku":"MEZ-STRADA","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/01-STRADA-transparent-photoasset_f20613e5-fccc-47d8-9534-a8f1e5c53927.png?v=1769034900"},{"product_id":"feliks-audio-envy-susvara-edition-headphone-amplifier","title":"Feliks Audio Envy Susvara Edition Headphone Amplifier","description":"\u003ch1\u003eFeliks Audio Envy Susvara Edition Headphone Amplifier\u003c\/h1\u003e\n\u003ch3\u003eA high-power edition with a number of upgrades resulting in performance that's close to the 25th Anniversary Edition\u003c\/h3\u003e\n\u003cp\u003eFeliks Audio's flagship, the Envy, was released in 2021, and it was quickly apparent that it was a match made in heaven for the HiFiMAN Susvara, one of the most demanding pairs of headphones on the market.\u003c\/p\u003e\n\u003cp\u003eThe original Envy became one of the headphone community's favorite amplifiers and both Feliks and HiFiMAN knew there was a market for an official pairing. The Envy Susvara Edition sits above the Envy Performance, and its many upgrades bring it very close to the level of the Envy 25th Anniversary Edition.\u003c\/p\u003e\n\u003ch4\u003eIncreased Power Output\u003c\/h4\u003e\n\u003cp\u003eThe most important change is the increase in power output to ably handle the Susvara's lightning-fast demands. The Susvara Edition sports new gain settings:  Low, High, and Susvara. The latter provides up to a 12% increase in power output. The Susvara Edition outputs up to 9 watts of power, a significant step-up compared to the Envy Performance. Thanks to that, the Susvara Edition can power any headphones on the market, harnessing every ounce of your headphones’ potential.\u003c\/p\u003e\n\u003cp\u003eAnother improvement is the use of new amorphous-core output transformers. The Envy 25th Anniversary Edition taught Feliks how much difference this type of transformer can make, so using\u003cspan style=\"font-size: 0.875rem;\"\u003e it in the most powerful Envy edition to date was obvious. These custom-made components provide ultra-low noise and superior dynamics compared to other amplifiers in the summit-fi class. Another advantage of amorphous-core transformers is the incredible extension of the frequency response, absolutely essential in an endgame headphone amplifier.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eThe Finest Tubes\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Envy Susvara Edition comes with some of the finest 300B tubes available: the Stradi S300B. This carefully matched premium 300B tube set provides great frequency response and a precise, detailed, and airy sound signature. This arrangement results in the most technical and detailed presentation achievable with your favorite headphones. Envy Susvara Edition is compatible with any 300B power tubes that have a standard filament voltage of 5 Volts, allowing you to tailor the amplifier’s sound to your specific needs.\u003c\/p\u003e\n\u003cp\u003eApart from the power tubes and transformers, several signal-critical components, such as capacitors and resistors, have been upgraded, matching the Envy 25th Anniversary Edition. Using high-precision components from brands such as Jantzen, Vishay, Nichicon, or Dale, Feliks is able to maximize signal clarity and fidelity. A number of modifications to signal wiring have resulted in better noise reduction.\u003c\/p\u003e\n\u003cp\u003eAdditional improvements include tweaks to better stabilize tube parameters and enhance protection in case of tube failure. The preamp output has also been modified and optimized to reduce noise levels and better handle the higher signal levels. \u003c\/p\u003e\n\u003ch4\u003eThe Finish\u003c\/h4\u003e\n\u003cp\u003eThe Envy Susvara Edition has a similar design to the Envy Anniversary Edition, but celebrates the solid wood over using a black piano finish. This luxurious, richly grained finish is available in wenge, but other finish options are available on request.\u003c\/p\u003e\n\u003ch3\u003eIn The Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnvy Susvara Edition Headphone Amplifier\u003c\/li\u003e\n\u003cli\u003e2 x Stradi S300B tubes\u003c\/li\u003e\n\u003cli\u003e2 x PsVane CV-181 Mk. 2 tubes\u003c\/li\u003e\n\u003cli\u003eAC Power Cord\u003c\/li\u003e\n\u003cli\u003eUser Manual\u003c\/li\u003e\n\u003cli\u003eWarranty Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eInputs:\u003c\/b\u003e 2 x unbalanced RCA (IN1, IN2); 1 x balanced XLR (IN3)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Sensitivity:\u003c\/b\u003e 1 V RMS\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e IN1 and IN2 (RCA): 100 kΩ; IN3 (XLR): 10 kΩ\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePre-Amplifier Outputs:\u003c\/b\u003e 1 x pair RCA; 1 x pair XLR\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMaximum Output Voltage:\u003c\/b\u003e 5 V RMS\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e 600 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMaximum Output Power:\u003c\/b\u003e 9 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAmplifier Output Impedance:\u003c\/b\u003e LO at 32 Ω load: 3.8 Ω; HI at 600 Ω load: 20 Ω; SUSVARA at 600 Ω load: 22 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHeadphone Outputs:\u003c\/b\u003e 6.3 mm, 4-pin XLR\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e 110 VA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (WHD):\u003c\/b\u003e 13.78\" x 7.28\" x 13\" (35 x 18.5 x 33 cm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 33.29 lb. (15.1 kg)\u003c\/p\u003e","brand":"Feliks Audio","offers":[{"title":"Default Title","offer_id":52508432400568,"sku":"FLA-ENVY-SUSV","price":16600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/FeliksAudio-Envy-SusvaraEdition_10.jpg?v=1775493587"},{"product_id":"auris-headonia-mk-ii-reference-300b-headphone-amplifier","title":"Auris Headonia Mk II Reference 300B Headphone Amplifier","description":"\u003ch1\u003eAuris Headonia 300B Mk II Headphone Amplifier\u003c\/h1\u003e\n\u003ch3\u003eSingle-ended 300B reference design with impedance matching, premium components, and a special output for true-ribbon headphones\u003c\/h3\u003e\n\u003cp\u003eAuris builds on the already legendary Headonia with the Mk II. Here are some of the improvements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA redesigned power profile chassis that's similar to that of the Adagio\u003c\/li\u003e\n\u003cli\u003eAbility to use mesh-plate tubes with a switch to select between mesh and standard 300B \u003c\/li\u003e\n\u003cli\u003eA true ribbon output mode  via 4-pin male XLR for all RAAL headphones. The $2,000 RAAL transformer is no longer needed\u003c\/li\u003e\n\u003cli\u003eNew “barrel” adapter transformers for a much better sound\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Auris Headonia 300B Mk II is the reference model from Auris Audio, designed to exceed the demands of today’s high-end headphones. With two 300B power tubes, two 6SN7 input tubes, and 7 W of single-ended output, the Headonia delivers the power, headroom, and authority that contemporary premium headphones require—all while retaining the signature warmth and harmonic richness of classic 300B topology.\u003c\/p\u003e\n\u003cp\u003eSerbia produces the best copper on the planet, and Auris uses it to wind its custom output transformers. Good output transformers offer huge bandwidth and dynamics and do justice to the high-quality components used upstream. \u003c\/p\u003e\n\u003ch4\u003eThe Single-Ended 300B Signature\u003c\/h4\u003e\n\u003cp\u003eThe amplifier’s single-ended 300B architecture is built for natural tone and musicality. These tubes are prized for their organic, fluid presentation, revealing texture and micro-detail without losing body or weight. Auris leans into the strengths of the 300B design to produce a sound that is richly layered, holographic, and exceptionally lifelike across the entire frequency spectrum.\u003c\/p\u003e\n\u003ch4\u003eImpedance Matching for Total Compatibility\u003c\/h4\u003e\n\u003cp\u003eMany tube headphone amplifiers commit to one fixed output impedance, but the Headonia 300B offers a front-panel impedance selector tied to the output transformer secondaries. This allows proper matching to headphones from 32 to 600 ohms, preserving dynamics, maintaining clarity, and ensuring optimal damping. Whether you rotate through several headphones or use a single reference pair, the Headonia adapts to each model with precision.\u003c\/p\u003e\n\u003ch4\u003ePremium Build and Vibration Control\u003c\/h4\u003e\n\u003cp\u003eThe chassis is machined from thick 8–10 mm aluminum, chosen for rigidity, shielding, and long-term stability. Auris further improves mechanical quieting through a rubber-plastic-metal sandwich foot design that limits transmitted vibration. The result is a low-noise platform that maintains purity of tone and preserves the amplifier’s expressive character.\u003c\/p\u003e\n\u003ch4\u003eTop-Tier Components Throughout\u003c\/h4\u003e\n\u003cp\u003eInside the chassis, Auris specifies high-grade parts chosen for longevity and sonic stability. Japanese Alps potentiometers provide smooth and precise volume control. German-made Mundorf capacitors preserve signal integrity and dynamic expression. Balanced inputs are handled by Lundahl transformers, which contribute exceptional noise rejection and enhanced refinement.\u003c\/p\u003e\n\u003ch4\u003eFlexible Balanced and Single-Ended Connectivity\u003c\/h4\u003e\n\u003cp\u003eThe Headonia 300B includes both single-ended and transformer-coupled balanced inputs, offering broad source compatibility while ensuring optimal signal integrity. A preamp output allows the amplifier to function as the control center of a system when feeding external power amplifiers or active loudspeakers. For headphones, both 6.3 mm and 4-pin XLR outputs are provided, supporting the vast majority of aftermarket cables.\u003c\/p\u003e\n\u003ch4\u003eCrafted for Long-Term Reference Listening\u003c\/h4\u003e\n\u003cp\u003eAuris designs the Headonia 300B with longevity and consistency in mind, pairing heavy-duty construction with a timeless, understated industrial design. The warm glow of the 300B tubes reinforces the amplifier’s vintage-meets-modern appeal, making it a visually striking centerpiece in any listening space.\u003c\/p\u003e\n\u003ch4\u003eA Statement of Craftsmanship and Performance\u003c\/h4\u003e\n\u003cp\u003eThe Headonia 300B is built as a no-compromise instrument for discerning audiophiles. Its combination of power, flexibility, premium components, and classic tube character makes it a compelling choice for anyone seeking a reference-grade headphone amplifier that excels across genres and headphone types.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eAnalog Inputs:\u003c\/b\u003e 2 x RCA, 1 x XLR\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAnalog Outputs:\u003c\/b\u003e 1 x 6.3 mm, 1 x XLR, 1 x RCA pre, 1 x XLR pre\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTubes:\u003c\/b\u003e 2 x 300B, 2 x CV181\/6SN7\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMax Power Output:\u003c\/b\u003e 7 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e 32\/80\/200 ohm\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHeadphone Output Power:\u003c\/b\u003e 7 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHeadphone Output Voltage (32 ohm, 80 ohm, 200 ohm):\u003c\/b\u003e 15 V, 23.5 V, 37.5 V\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHeadphone THD+N:\u003c\/b\u003e 0.4% at 1 W; 2% max power, Low Gain; 7% max power, High Gain\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSNR:\u003c\/b\u003e 100 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Sensitivity (SE, Balanced):\u003c\/b\u003e 0.8 V, 3.1 V\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePre-Out Max Output Voltage:\u003c\/b\u003e 17 V\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePre-Out SNR:\u003c\/b\u003e 100 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (LWH):\u003c\/b\u003e 18.11\" x 17.32\" x 10.83\" (460 x 440 x 275 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 43 lb. (19.5 kg)\u003c\/p\u003e","brand":"Auris","offers":[{"title":"Default Title","offer_id":53364782301368,"sku":"HEADONIA-MK2","price":15900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/head1.jpg?v=1777578011"}],"url":"https:\/\/upscaleaudio.com\/collections\/sounds-of-summer-2026.oembed","provider":"Upscale Audio","version":"1.0","type":"link"}