Expanse Headphones By Dan Clark Audio

PA 3100 HV Integrated Amplifier

The PA 3100 HV from T+A is a high-performance integrated amplifier designed for audiophiles seeking reference-level sound quality and exceptional system flexibility. It features a meticulously engineered pre-amplifier section, an upgraded analog power supply, and a powerful voltage delivery system that together provide outstanding clarity, control, and musical dynamics.

For systems requiring even greater performance, the amplifier can be paired with the optional T+A PS 3000 HV Power Supply, which further enhances stability and power reserves—helping the amplifier drive even the most demanding loudspeakers with ease.

The design also allows for additional functionality through optional modules, including a high-end phono pre-amplifier for vinyl playback or an analog signal processor module offering tone and loudness adjustments. This modular approach provides the flexibility to tailor the amplifier to different listening preferences and system setups.

Advanced Circuitry & Performance

At its core, the PA 3100 HV utilizes differential cascode amplification with discrete J-FET transistors, a configuration known for delivering exceptional linearity, low noise, and wide dynamic range.

High-quality gas-tight gold-contact relays are used throughout the signal path to ensure reliable switching and long-term performance while minimizing unwanted noise. The precision relay-controlled volume system, built with carefully matched resistors, ensures accurate channel balance and maintains signal purity—resulting in clean, distortion-free sound reproduction across all listening levels.

Steve Huff (YouTube)
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 P 3100 HV, with thoughts of it for years and years, and it still managed to impress me more than I could have imagined.”

Stereophile
https://www.stereophile.com/content/ta-pa3100-hv-integrated-amplifier

“The T+A PA 3100 HV integrated amplifier makes a strong, consistent statement about sonic realities and the pathway to pleasure. Its consistently musical presentation, which emphasizes smoothness and ease over strong contrasts and abrupt shifts, renders it a powerful transmitter of musical truth…”

SoundStage! HiFi (Recommended Reference Component Award)
https://www.soundstagehifi.com/index.php/reference-components/1167-recommended-reference-component-ta-elektroakustik-pa3100hv-integrated-amplifier

“It was T+A’s no-compromise approach to designing and crafting the PA 3100 HV that earned it a Reviewers’ Choice nod when Jeff’s review was published — and now has earned its inclusion in our list of Recommended Reference Components.”

Pre-Amplifier

• Frequency response + 0 / – 3 dB : 0,5 Hz –300 kHz
• Signal / noise ratio : 105 / 110 dB
• Total harmonic distortion : < 0,001%
• Intermodulation : < 0,001 %
• Channel separation : > 90 dB
• Nominal input sensitivity High level (RCA) : 7 x 250 mVeff … 6 Veff / 20 kOhms
• Nominal input sensitivity Balanced (XLR) : 4 x 500 mVeff … 12 Veff / 5 kOhms

Outputs

• Headphones : 50 Ohms
• 1 x Recorder : 250 mVeff / 100 Ohms
• PRE out RCA : nom 1 Veff, max 9,5 Veff / 50 Ohms
• PRE out XLR : nom 1,45 Veff, max 19,6 Veff / 50 Ohms

Output stage

• RMS output per channel into 8 Ohms : 300 Watts
• RMS output per channel into 4 Ohms : 500 Watts
• Peak output into 8 Ohms : 380 Watts
• Peak output into 4 Ohms : 700 Watts
• Power bandwith : 1 Hz – 150 kHz
• Frequency response + 0 / – 3 dB : 0,5 Hz – 180 kHz
• Slew rate : 60 V/µs
• Damping factor : > 65
• Signal / noise ratio : > 115 dB
• Total harmonic distortion : < 0,03 %
• Reservoir capacity : 120000 µF

Mains / Accessories / Dimensions

• Mains : 110 V/60 Hz or 220/240 V/50 Hz
• Standby : < 0,5 W
• Remote control : F 3001
• Features :
  • Trigger input +5 … 20V for external switching-on Input 4 can be configured in surround mode (Surround pass-through) connectivity for additional PS 3000 HV LAN connector for home-automation systems
• Optional Accessories :
  • PS 3000 HV Power Supply | PH HV MM / MC phono module | APM signal processor module | 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

PSD 3100 HV User manual

PA 3100 HV Catalog