{"product_id":"phasemation-ma-3000-reference-monoblock-power-amplifier-pair","title":"Phasemation MA-3000 Reference Monoblock Power Amplifier (pair)","description":"\u003ch1\u003ePhasemation MA-3000 Tube Monaural Power Amplifier\u003c\/h1\u003e\n\u003ch3\u003e25 W parallel single-ended 300B output stage with transformer-coupled EL34 drive and no negative feedback\u003c\/h3\u003e\n\u003cp\u003eThe Phasemation MA-3000 is a class A tube monaural power amplifier developed as a more accessible sibling to the flagship MA-5000. Rather than simply adapting the earlier MA-2000 platform, Phasemation brought key elements of the MA-5000's circuit architecture to the new amplifier, including a driver stage that operates as a power amplification stage rather than a conventional voltage-amplification stage. \u003c\/p\u003e\n\u003cp\u003eThe output stage uses 300B directly heated triodes in a parallel single-ended configuration to deliver 25 W, while a high-grade PSVANE EL34 operated in triode mode drives the output stage through a custom Phasemation interstage transformer. The amplifier operates in pure class A without negative feedback, reflecting Phasemation's emphasis on simple signal paths and responsive, expressive reproduction. \u003c\/p\u003e\n\u003cp\u003eA newly developed toroidal power transformer supplies the low-impedance drive stage, while the output transformer is manufactured by Lundahl of Sweden. The MA-3000 also inherits the MA-5000's floating transformer-isolation structure, using a vibration-damping material to reduce the transmission of transformer vibration into the chassis, circuit boards, and vacuum tubes. Extensive magnetic shielding is applied around transformers, choke coils, and tubes to reduce leakage flux reaching sensitive signal circuitry. \u003c\/p\u003e\n\u003cp\u003eConnections include both RCA and XLR inputs, with gold-plated machined RCA terminals and Neutrik XLR connectors with gold-plated contacts. Furutech pure-copper, rhodium-plated speaker terminals provide separate 4-ohm and 8-ohm outputs and incorporate a torque limiter to prevent overtightening. A rear-panel attenuator provides 0 dB, -6 dB, and MUTE settings, allowing easier volume-range matching with different preamplifiers. \u003c\/p\u003e\n\u003cp\u003eThe tube cover is an integral part of the MA-3000's design rather than a removable cosmetic accessory. A silicon-steel shield helps prevent magnetic flux from the tubes from reaching other circuits, while the ventilation pattern draws on traditional Japanese motifs. Thick finished glass, Phasemation's slanted aluminum fascia, and TAOC high-carbon cast-iron feet complete a chassis engineered around both mechanical stability and the amplifier's distinctive appearance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e25 W parallel single-ended 300B output stage\u003c\/li\u003e\n\u003cli\u003ePure class A operation with no negative feedback\u003c\/li\u003e\n\u003cli\u003eEL34 driver tube operated in triode mode\u003c\/li\u003e\n\u003cli\u003eTransformer-coupled driver and output stages\u003c\/li\u003e\n\u003cli\u003eDriver stage operates as a low-impedance power amplification circuit\u003c\/li\u003e\n\u003cli\u003eNewly developed toroidal power transformer\u003c\/li\u003e\n\u003cli\u003eLundahl output transformer\u003c\/li\u003e\n\u003cli\u003eCustom Phasemation interstage transformer\u003c\/li\u003e\n\u003cli\u003eMA-5000-derived floating transformer-isolation structure\u003c\/li\u003e\n\u003cli\u003eComprehensive magnetic-flux shielding\u003c\/li\u003e\n\u003cli\u003eRCA and XLR inputs\u003c\/li\u003e\n\u003cli\u003e0 dB, -6 dB, and MUTE attenuator settings\u003c\/li\u003e\n\u003cli\u003eSeparate 4-ohm and 8-ohm Furutech speaker terminals\u003c\/li\u003e\n\u003cli\u003eTAOC high-carbon cast-iron feet\u003c\/li\u003e\n\u003cli\u003eTube cover with silicon-steel shielding and traditional Japanese-pattern ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Tube monaural power amplifier\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 47 kΩ\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGain:\u003c\/b\u003e 30 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNoise:\u003c\/b\u003e Less than 200 μV (A-NET)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMaximum Output Power:\u003c\/b\u003e 25 W (5% THD)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 10 Hz–40 kHz \u003cb\u003e(+0, -3 dB)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e 4 Ω, 8 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e 140 W (100 VAC, 50–60 Hz)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 10\" × 12.2\" × 18.9\" (255 × 310 × 480 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 41.9 lb. (19 kg)\u003c\/p\u003e","brand":"Phasemation","offers":[{"title":"Default Title","offer_id":53575375159480,"sku":"MA-3000","price":49975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MA-3000_image_03.jpg?v=1790101678","url":"https:\/\/upscaleaudio.com\/products\/phasemation-ma-3000-reference-monoblock-power-amplifier-pair","provider":"Upscale Audio","version":"1.0","type":"link"}