A 3100 HV Power Amplifier By T+A HiFi

The A 3100 HV from T+A is a high-performance power amplifier designed to complement premium preamplifiers like the T+A P 3100 HV, delivering exceptional sound quality, precise control, and outstanding power. It operates as a stereo amplifier but can also be configured in mono mode, effectively using separate amplifiers for each channel to double current output and maximize pure Class-A performance—offering a level of sonic detail and dynamic range that rivals more expensive models.

By separating preamplifier and power amplifier functions, the design ensures optimal circuit and mechanical engineering. The preamplifier handles delicate low-level signals with minimal interference, while the power amplifier focuses on high-current delivery with stable voltage and exceptional dynamic control.

The amplifier’s key components—including the power circuit, output stages, and mains supply—are housed in shielded compartments to minimize interference. Voltage and current amplification stages are located on isolated circuit boards, and galvanic separation eliminates feedback from speaker currents, preserving pristine audio fidelity.

The advanced amplifier design features a broad-band, highly linear differential cascode stage and a Class-A large-signal output, using MOSFET drivers and thermally tracked bipolar transistors for consistent, distortion-free performance. All power transistors are monitored for temperature, ensuring stable operation and precise sound even under demanding loads.

Full symmetry in all components reduces magnetic stray fields and electromagnetic feedback, further protecting signal integrity. High-quality speaker terminals, machined from solid brass and rhodium-plated, provide reliable, corrosion-resistant connections for optimum conductivity.

For those seeking maximum performance, the amplifier can be paired with the optional T+A PS 3100 HV external power supply, enhancing voltage and current delivery for an even more dynamic and refined listening experience.

Steve Huff (YouTube) – (HV 3100 Integrated Review)
https://www.stevehuffphoto.com/2025/01/14/the-ta-pa-3100-hv-integrated-amplifier-review-worlds-best/

“I had very high expectations for the T+A PA 3100 HV, with thoughts of it for years and years, and it still managed to impress me more than I could have imagined.”

Future Audiophile
“This amp simply delivers—and does so by creating a very engaging sonic picture through its clarity, accuracy, dynamics, and bass performance. So much so that I have made the A 3000 HV amp and the matching P3100 HV stereo preamp my new reference electronics, a choice that I expect will bring me years of musical satisfaction.”

https://futureaudiophile.com/ta-elektroakustik-a-3000-hv-power-amplifier-reviewed

“T+A’s ‘no compromise’ HV series components are designed for the luxury audiophile market. In that context, this latest amp combo is sensational value. We’ve said this so often of T+A’s separates there’s a danger of it becoming tedious: if they were made by a boutique audio manufacturer they’d come with price tags two or even three times larger. Little wonder the German company is selling them hand over fist.”

https://reviewtechgame.blogspot.com/2014/07/ta-p3000a3000ps3000hv-prepower.html

Output stage
All measurements at 120 / 240 V mains voltage

• RMS output per channel stereo mode :
  • into 8 Ohms: 300 Watts
  • into 4 Ohms: 500 Watts
• Peak output per channel stereo mode :
  • into 8 Ohms: 380 Watts
  • into 4 Ohms: 700 Watts
• RMS output Mono mode :
  • into 8 Ohms: 380 Watts
  • into 4 Ohms: 650 Watts
• Peak output Mono mode :
  • into 8 Ohms: 430 Watts
  • into 4 Ohms: 800 Watts
  • Power bandwidth: 1 Hz – 150 kHz
  • Frequency response + 0 / – 3 dB : 0,5 Hz – 180 kHz
  • Slew rate: 60 V/?s
  • Damping factor : > 65
  • Signal / noise ratio : > 115 dB
  • Total harmonic distortion : < 0,03 %
  • Reservoir capacity: 120000 ?F
• Mains / Accessories / Dimensions :
  • Mains : 110-120 V/60 Hz oder 220-240 V/50 Hz / 1500 W
  • Standby : < 0,5 W
  • Features: Trigger input +5 … 20V for external switching-on
  • Optional Accessories :
    PS 3100 HV Power Supply | Power Three HD (Carbon) | Power Bar | Audio Quad (Carbon) | Speaker Hex (Carbon) HV-Individual finish (Individual colors on request)| IP control
  • Dimensions (H x W x D) : 17 x 46 x 46 cm
  • Weight : 38 kg
  • Finishes : Case: silver laquer 47 or titanium laquer 64, heat sink: black 42
  • Technical modifications reserved

A 3000 HV User manual
A 3000 HV Literature