T+A PA 3100 HV Reference Integrated Amplifier

300 Watts per Channel into 8 Ohms • 500 Watts per Channel into 4 Ohms • High Voltage Amplification • Discrete J-FET Preamplifier • Dual Analog VU Meters • Optional External Power Supply • Made in Germany

Complimentary White Glove Delivery • Private Auditions • Travel Reimbursement Available*

The T+A PA 3100 HV is a reference-grade integrated stereo amplifier combining a sophisticated high-voltage preamplifier and powerful stereo output stage in a single precision-engineered chassis. Delivering 300 watts per channel into 8 ohms and 500 watts per channel into 4 ohms, the PA 3100 HV provides exceptional power reserves, wide bandwidth and the current delivery required for demanding high-end loudspeakers.

Developed and manufactured in Germany, the PA 3100 HV incorporates T+A's proprietary High Voltage (HV) circuit technology, fully discrete J-FET preamplification, precision relay-controlled volume adjustment and a substantial 120,000µF power supply reservoir.

Its distinctive front panel features dual illuminated analog VU meters, displaying the output power of each channel. Extensive balanced and unbalanced connectivity, optional phono modules and compatibility with the external T+A PS 3000 HV power supply make the PA 3100 HV a comprehensive foundation for a reference two-channel audio system.

High Voltage Amplification Technology

T+A's proprietary HV architecture operates the amplifier's signal stages at substantially higher voltages than conventional transistor preamplifiers.

The increased operating voltage provides greater signal headroom and enables the circuitry to process signals up to 60V peak-to-peak with extremely low distortion.

The PA 3100 HV uses a differential cascode circuit topology incorporating individually selected audio-grade J-FET transistors. Its discrete construction eliminates operational amplifiers from the signal path and requires very little overall negative feedback.

This architecture is engineered for exceptional linearity, low noise and an extended frequency response.

500-Watt High-Current Stereo Power Amplifier

The PA 3100 HV delivers substantial continuous and peak output power:

• 300 watts per channel into 8 ohms

• 500 watts per channel into 4 ohms

• 380 watts peak per channel into 8 ohms

• 700 watts peak per channel into 4 ohms

Its output stage provides a 1Hz–150kHz power bandwidth, a slew rate of 60V/µs and a signal-to-noise ratio exceeding 115dB.

A 120,000µF power supply reservoir supports dynamic current delivery during demanding musical passages.

The amplifier's substantial power capability makes it suitable for reference floorstanding loudspeakers, including designs with challenging impedance characteristics.

Discrete J-FET Preamplifier and Precision Volume Control

The PA 3100 HV incorporates a fully discrete preamplifier stage with direct-coupled circuitry and carefully selected J-FET devices.

Audio signal switching is handled by encapsulated, gas-tight relays with gold-plated contacts, designed to maintain reliable electrical connections over extended service life.

Instead of a conventional volume potentiometer, the PA 3100 HV uses a network of precision resistors and gold-contact relays. This architecture provides accurate channel tracking while minimizing unnecessary signal-path components.

The preamplifier section achieves a specified total harmonic distortion below 0.001% and frequency response extending to 300kHz.

Optional PS 3000 HV External Power Supply

The PA 3100 HV can be upgraded with the dedicated T+A PS 3000 HV external power supply, available separately.

This substantial supplementary power supply provides an additional 1,800 watts of supply capability, increasing the available power reserves and stability of the amplifier's supply system.

The PS 3000 HV is particularly relevant for systems using difficult-to-drive loudspeakers or requiring substantial dynamic headroom.

The PA 3100 HV operates as a complete integrated amplifier without the external power supply.

Balanced Connectivity and Optional Phono Modules

The PA 3100 HV offers extensive analog connectivity for reference music systems.

Its inputs accommodate balanced XLR and unbalanced RCA sources, including external DACs, network streamers, CD players and analog audio components.

For vinyl playback, optional T+A PH HV phono modules are available in moving-magnet and moving-coil configurations. These modules install internally, eliminating the need for a separate phono preamplifier.

An optional analog signal processing module adds channel-specific tone and loudness adjustment capabilities.

Balanced XLR and RCA preamplifier outputs allow integration with additional power amplifiers or other compatible components.

Home Theater Integration and System Control

Input 4 can be configured for surround pass-through, allowing the PA 3100 HV to power the front left and right speakers in a compatible multichannel system.

This makes it possible to maintain a dedicated reference stereo signal path while sharing the same front loudspeakers with a home theater processor.

Additional features include a trigger input, LAN connectivity for home automation and the included T+A F 3001 aluminum remote control.

Reference Aluminum Construction and VU Meters

The PA 3100 HV features an exceptionally rigid aluminum enclosure with substantial external heat sinks and a carefully organized internal layout.

The front panel incorporates two analog VU meters that display output power logarithmically in watts referenced to a 4-ohm load.

Available finishes include Silver 47 and Titanium 64, both complemented by black heat sinks.

At approximately 84 pounds (38kg), the PA 3100 HV reflects T+A's emphasis on substantial power supply construction, thermal management and mechanical stability.

Technical Specifications

Specification	Details
Brand	T+A
Model	PA 3100 HV
Series	HV Series
Product Type	Reference Integrated Stereo Amplifier
Amplifier Technology	T+A High Voltage (HV)
Preamplifier Architecture	Discrete Differential Cascode J-FET
Volume Control	Precision Resistors and Gold-Contact Relays
Continuous Output, 8Ω	300W per Channel
Continuous Output, 4Ω	500W per Channel
Peak Output, 8Ω	380W per Channel
Peak Output, 4Ω	700W per Channel
Power Bandwidth	1Hz–150kHz
Power Amplifier Frequency Response	0.5Hz–180kHz (-3dB)
Preamplifier Frequency Response	0.5Hz–300kHz (-3dB)
Preamplifier THD	Less Than 0.001%
Preamplifier Intermodulation Distortion	Less Than 0.001%
Power Amplifier THD	Less Than 0.03%
Preamplifier Channel Separation	Greater Than 90dB
Preamplifier SNR	105dB / 110dB
Power Amplifier SNR	Greater Than 115dB
Slew Rate	60V/µs
Damping Factor	Greater Than 65
Power Supply Reservoir	120,000µF
RCA Input Specifications	7 High-Level Input Paths, 20kΩ
XLR Input Specifications	4 Balanced Input Paths, 20kΩ
RCA Input Sensitivity	250mV–3V
XLR Input Sensitivity	500mV–6V
RCA Preamplifier Output	1V Nominal, 9.5V Maximum
XLR Preamplifier Output	1.45V Nominal, 19.6V Maximum
Recorder Output	250mV / 100Ω
Headphone Output	50Ω
Home Theater Integration	Configurable Surround Pass-Through
External Power Supply Compatibility	T+A PS 3000 HV
Optional Phono Modules	PH HV MM / PH HV MC
Optional Signal Processing	APM Analog Signal Processor
Automation Connectivity	LAN, Trigger Input
Trigger Voltage	5–20V
Remote Control	T+A F 3001 Included
Front Panel Meters	Dual Analog VU Meters
Power Requirements	110V/60Hz or 220–240V/50Hz
Standby Power Consumption	Less Than 0.5W
Dimensions (H × W × D)	6.69" × 18.11" × 18.11"
Dimensions (Metric)	170 × 460 × 460mm
Weight	83.8 lb / 38kg
Finishes	Silver 47, Titanium 64
Heat Sink Finish	Black 42
Country of Manufacture	Germany

T+A PA 3100 HV at The Grid HiFi

Reference Amplification and Complete System Engineering

The Grid HiFi specializes in ultra-high-end two-channel audio, reference amplification, premium loudspeakers and complete listening room design.

The T+A PA 3100 HV is engineered for listeners who demand the authority of a substantial power amplifier combined with the precision and simplicity of an integrated component.

Our team can design complete systems pairing the PA 3100 HV with reference loudspeakers from Focal, Sonus faber, Marten, Bowers & Wilkins and other leading manufacturers, alongside digital sources, analog playback systems and carefully selected cabling.

As a Focal Powered by Naim partner, The Grid HiFi brings extensive experience in matching reference electronics with demanding loudspeaker systems.

Our services include amplifier and loudspeaker matching, private listening consultations, complete system design, acoustic planning, professional installation and nationwide concierge support.

Private Auditions and White Glove Ownership

Complimentary White Glove Delivery • Travel Reimbursement Available*

Qualifying purchasers may receive airfare reimbursement for a private audition when completing an eligible purchase.

Considering the T+A PA 3100 HV? Let The Grid HiFi engineer your reference audio system. Call (713) 218-8120 to arrange a private consultation.

*Restrictions apply. Contact The Grid HiFi for eligibility and details.

Frequently Asked Questions

How powerful is the T+A PA 3100 HV?

The PA 3100 HV delivers 300 watts per channel into 8 ohms and 500 watts per channel into 4 ohms, with peak output reaching 700 watts per channel into 4 ohms.

Does the PA 3100 HV include a DAC or streamer?

No. The PA 3100 HV is an analog integrated amplifier. External digital sources, such as a T+A music player, streamer or DAC, can be connected through its analog inputs.

Can the PA 3100 HV play vinyl records?

Yes, when equipped with the appropriate optional T+A PH HV moving-magnet or moving-coil phono module. Alternatively, an external phono preamplifier can be connected to a line-level input.

Is the PS 3000 HV power supply required?

No. The PA 3100 HV operates independently. The optional PS 3000 HV adds supplementary power supply capacity for systems requiring additional power reserves.

Can the PA 3100 HV be integrated into a home theater?

Yes. Its configurable surround pass-through input allows compatible home theater processors to use the PA 3100 HV for front-channel amplification.

What loudspeakers pair well with the PA 3100 HV?

With 300W into 8 ohms and 500W into 4 ohms, the PA 3100 HV can drive a broad range of high-performance loudspeakers. Final matching should account for impedance, sensitivity, room size and listening preferences.