{"product_id":"t-a-elektroakustik-a-3100-hv-power-amplifier","title":"T+A Elektroakustik A 3100 HV Power Amplifier","description":"\u003ch1\u003eT+A A 3100 HV Reference Power Amplifier\u003c\/h1\u003e\n\u003ch3\u003eSelectable High Current and High Power operation, switchable stereo or mono configurations, 500 Wpc output, and more than 270 revisions to the A 3000 HV architecture\u003c\/h3\u003e\n\u003cp\u003eThe T+A A 3100 HV builds on the A 3000 HV power amplifier after its ten-year production run, retaining the fundamental HV architecture while incorporating more than 270 engineering changes and refinements. Revised circuit boards, tighter-tolerance components, improved thermal management, a new transformer, and a selectable High Current mode extend the design well beyond a conventional model update.\u003c\/p\u003e\n\u003cp\u003eThe A 3100 HV can be used as a stereo amplifier or configured for mono operation, and it offers two distinctly different operating modes. High Current mode prioritizes elevated bias and an expanded class-A operating range, while High Power mode provides 300 Wpc into 8 ohms and 500 Wpc into 4 ohms for loudspeakers requiring greater output.\u003c\/p\u003e\n\u003ch4\u003eHigh Current or High Power\u003c\/h4\u003e\n\u003cp\u003eIn High Current mode, the A 3100 HV reduces the output-stage supply voltage while substantially increasing its idle current. This allows the amplifier to operate in pure class-A up to approximately 75 W before transitioning into class-AB operation, with output extending to approximately 140 W.\u003c\/p\u003e\n\u003cp\u003eHigh Power mode raises the operating voltage and delivers the amplifier’s maximum output: 300 Wpc into 8 ohms and 500 Wpc into 4 ohms, with peak output reaching 380 Wpc and 700 Wpc, respectively. The operating mode is selected using a switch on the rear panel.\u003c\/p\u003e\n\u003ch4\u003eSwitchable Stereo and Mono Operation\u003c\/h4\u003e\n\u003cp\u003eThe A 3100 HV can also be converted from stereo to mono operation, allowing one amplifier to be used for each loudspeaker. Instead of bridging its two channels, the amplifier connects the output stages in parallel. This approach increases current capability while retaining the load stability of the individual output stages. In mono mode, the A 3100 HV delivers 380 W into 8 ohms or 650 W into 4 ohms, with peak output reaching 430 W and 800 W.\u003c\/p\u003e\n\u003ch4\u003eIso-Thermal Dual-Mono Construction\u003c\/h4\u003e\n\u003cp\u003eThe internally isolated dual-mono amplifier boards use an optimized component layout designed to distribute heat predictably across both channels. Thermal-tracking diodes continuously monitor the bipolar output transistors and stabilize their operating points as the amplifier and surrounding room temperature change.\u003c\/p\u003e\n\u003cp\u003eVoltage and current amplification take place on separate boards within physically isolated compartments. These stages are also galvanically isolated, reducing the interaction between the low-level voltage-amplification circuitry and the much larger currents being delivered to the loudspeakers.\u003c\/p\u003e\n\u003ch4\u003eSymmetrical Signal Architecture\u003c\/h4\u003e\n\u003cp\u003eThe voltage-amplification stage uses a broadband, cross-coupled differential cascode circuit followed by a single-ended class-A large-signal stage. A fully symmetrical current amplifier combines MOSFET drivers with bipolar output transistors.\u003c\/p\u003e\n\u003cp\u003eThe circuit-board traces, output stages, and power-supply paths are arranged with mirrored symmetry. This layout allows opposing signal currents and their associated magnetic fields to compensate for one another rather than relying solely on additional filtering or shielding.\u003c\/p\u003e\n\u003ch4\u003eA Shielded 1,000 W Power Supply\u003c\/h4\u003e\n\u003cp\u003eThe A 3100 HV is powered by a 1,000 W toroidal transformer that is hermetically sealed and enclosed within a magnetic shield. A 10 mm aluminum partition separates the transformer and high-current power circuitry from the voltage-amplification stages above.\u003c\/p\u003e\n\u003cp\u003eTwelve low-inductance, low-ESR reservoir capacitors provide a total storage capacity of 120,000 µF. Their parallel arrangement reduces internal resistance and supports rapid current delivery during musical transients. A Power Link connection also allows the output stages to be powered by a compatible external T+A HV power supply, leaving the internal supply dedicated to the input and voltage-amplification circuitry.\u003c\/p\u003e\n\u003ch4\u003eConnections and System Integration\u003c\/h4\u003e\n\u003cp\u003eBalanced XLR and unbalanced RCA inputs are provided for each channel. Two independently switchable pairs of rhodium-plated brass speaker terminals support conventional wiring, bi-wiring, or two-zone operation. The A 3100 HV also includes H Link, a 5–20 V trigger input, a remote-control input, and a LAN connection for diagnostics and integration with compatible home-automation systems.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSwitchable stereo and mono operation\u003c\/li\u003e\n\u003cli\u003eSelectable High Current and High Power modes\u003c\/li\u003e\n\u003cli\u003eUp to 75 W of pure class-A operation in High Current mode\u003c\/li\u003e\n\u003cli\u003e300 Wpc into 8 ohms and 500 Wpc into 4 ohms in High Power mode\u003c\/li\u003e\n\u003cli\u003eFully symmetrical dual-mono construction\u003c\/li\u003e\n\u003cli\u003ePhysically and galvanically isolated voltage- and current-amplification stages\u003c\/li\u003e\n\u003cli\u003eThermal-tracking diodes stabilize the output-transistor operating points\u003c\/li\u003e\n\u003cli\u003eBroadband cross-coupled differential cascode voltage-amplification stage\u003c\/li\u003e\n\u003cli\u003eSingle-ended class-A large-signal stage\u003c\/li\u003e\n\u003cli\u003eMOSFET drivers and bipolar output transistors\u003c\/li\u003e\n\u003cli\u003eHermetically sealed and magnetically shielded 1,000 W toroidal transformer\u003c\/li\u003e\n\u003cli\u003e120,000 µF power-supply reservoir capacity\u003c\/li\u003e\n\u003cli\u003ePower Link connection for a compatible external T+A HV power supply\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and unbalanced RCA inputs\u003c\/li\u003e\n\u003cli\u003eTwo pairs of rhodium-plated brass speaker terminals\u003c\/li\u003e\n\u003cli\u003eFront-panel output meters with adjustable illumination and clipping indication\u003c\/li\u003e\n\u003cli\u003eH Link, LAN, remote-control, and 5–20 V trigger connections\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded Accessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower cord\u003c\/li\u003e\n\u003cli\u003eH Link cable\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003ePrinciple:\u003c\/b\u003e Switchable stereo\/mono power amplifier\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOperating Modes:\u003c\/b\u003e High Current and High Power\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAmplifier Architecture:\u003c\/b\u003e Fully symmetrical dual-mono\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAnalog Inputs:\u003c\/b\u003e 1 pair balanced XLR, 1 pair unbalanced RCA\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSpeaker Outputs:\u003c\/b\u003e 2 independently switchable pairs\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eControl Connections:\u003c\/b\u003e H Link, LAN, RC input, 5–20 V trigger input\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Power\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStereo (8 Ohms, 4 Ohms):\u003c\/b\u003e 300 Wpc, 500 Wpc\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMono (8 Ohms, 4 Ohms):\u003c\/b\u003e 380 Wpc, 650 Wpc\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePeak Output Power\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStereo (8 Ohms, 4 Ohms):\u003c\/b\u003e 380 Wpc, 700 Wpc\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMono (8 Ohms, 4 Ohms):\u003c\/b\u003e 430 Wpc, 800 Wpc\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHigh Current Mode Output:\u003c\/b\u003e Up to 75 W pure class-A; up to 140 W class-AB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSlew Rate:\u003c\/b\u003e 60 V\/µs\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDamping Factor (4 Ohms):\u003c\/b\u003e \u0026gt;65\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Sensitivity (25 V RMS Output):\u003c\/b\u003e RCA 600 mV; XLR 1.2 V\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e RCA 25 kohms; XLR 50 kohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGain:\u003c\/b\u003e RCA 32.4 dB; XLR 26.5 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower-Supply Reservoir Capacity:\u003c\/b\u003e 120,000 µF\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMains:\u003c\/b\u003e 110–120 V, 60 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMaximum Power Consumption:\u003c\/b\u003e 1,500 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStandby Power Consumption:\u003c\/b\u003e 0.5 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (HWD):\u003c\/b\u003e 6.7\" x 18.1\" x 18.1\" (17 x 46 x 46 cm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 83.8 lb. (38 kg)\u003c\/p\u003e","brand":"T+A Elektroakustik","offers":[{"title":"Silver Laquered","offer_id":53766998556856,"sku":"A-3100HV-SL","price":29900.0,"currency_code":"USD","in_stock":true},{"title":"Titanium","offer_id":53766998589624,"sku":"A-3100HV-TI","price":29900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/24356_TA_A3100Hv_001_e932fa32-fc21-4b3f-918e-0fbecb23f49f.jpg?v=1785861308","url":"https:\/\/upscaleaudio.com\/products\/t-a-elektroakustik-a-3100-hv-power-amplifier","provider":"Upscale Audio","version":"1.0","type":"link"}