93%
T+A PA 3100 HV
The Integrated Amplifier
The PA 3100 HV is a further development of the PA 3000 HV, and most of its sub-assemblies are identical. The immediately obvious difference is the pair of VU meters in the front panel, which display the power generated per channel in logarithmic form in Watts into 4 Ohms. A revision of the pre-amplifier section (D.C. coupling) has brought an additional improvement in sound quality.
A further development is the redesigned analogue mains section and voltage power supply, which is similar to that of the A 3000 HV. This makes it possible to connect the supplementary PS 3000 HV mains section in order to gain a further increase in stability and performance of the power supply system as a whole. The additional unit provides an extra 1800 Watt of supply power, enabling the system to control even the most difficult loudspeakers without effort, so that they can unfold the best possible sound quality.
Circuit Topology
As with the P 3000 HV, the circuit topology is based on a differential cascode amplifier with individually selected audio J-FET transistors, and stages of completely discrete construction without op-amps (operational amplifiers). Virtually no overall negative feedback is required due to this circuit arrangement and the quality of the components employed. The high operating voltage of HV technology is the key to excellent linearity combined with extremely wide dynamic range: signals up to 60 Vss can be processed without distortion.
In the HV series the signal switching and adjusting functions are carried out by encapsulated gas-tight gold-contact relays, which are totally immune to contact problems due to corrosion, dust, etc., and do not suffer from ageing effects even after many years of operation. The pre-amplifier even employs bi-stable relays, which require no permanent coil current, and this in turn eliminates any adverse inductive effect on the audio signals.
The direct integration of the relays into the circuit minimises the signal paths, and connecting cables - as required for conventional volume potentiometers - are no longer necessary. The volume control is assembled from discrete precision resistors and gold-contact relays. The result is totally precise channel matching, devoid of distortion and hiss.
Control Circuitry
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Professional Reviews 93/100
Deliciously Crispy
Sound Quality
94/100
Build Quality
96/100
Features Connectivity
91/100
Value for Money
88/100
The PA 3100 HV brings separates-scale authority to an analog integrated, pairing taut, punchy bass with dense tone, vivid images and a deep, layered soundstage. Jeff Fritz found its control and musical realism exceptional, while Paul Wilson admired its dynamic finesse and expansive presentation. With 300Wpc and immaculate engineering, it is a compelling centerpiece for serious source-first systems.
What Reviewers Are Saying
Pros
Exceptional bass control, power and dynamics deliver a separates-like sense of authority, even with demanding loudspeakers.
Palpable imaging and a deep, complete soundstage preserve low-level detail without sacrificing tonal density or musical coherence.
Flawless fit and finish, robust internal engineering and refined ergonomics make it an exceptionally built flagship integrated.
&
Cons
No onboard DAC, streaming or standard phono stage; digital and vinyl systems require separate components or optional modules.
Its premium price, 84-pound chassis and substantial ventilation requirements limit value and placement flexibility.
SOUND QUALITY PERFORMANCE 94/100
Reviewers describe a powerful yet composed amplifier distinguished by tonal density, ease, and unusually solid image formation. Its presentation favors natural body and musical continuity over overtly analytical spotlighting, while retaining convincing low-level information and large-scale authority.
Transparency Resolution
93/100
Jeff Fritz heard no veiling of recorded detail and praised the amplifier’s ability to retrieve low-level information without losing the musical whole. HiFi Huff likewise called it highly transparent, clean, and neutral, though SoundStage notes that it does not announce itself as a stereotypical “resolution monster.”
Tonal Balance Musicality
93/100
Reviewers consistently found the PA 3100 HV musically persuasive, natural, and free of artificiality. Future Audiophile heard an easygoing, warm, lush character, while HiFi Huff characterized it as clean and neutral; together these accounts point to a full-bodied but fundamentally faithful presentation.
Dynamics
95/100
The PA 3100 HV earns repeated praise for its control and power, from taut, punchy bass to beautifully tracked subtle dynamic shifts. Reviewers found it strong and effortless with demanding material, yet also capable of finesse in quiet and delicate passages.
Soundstage Imaging
95/100
Imaging is a major strength: reviewers describe palpable, solidly formed performers, clear instrumental separation, and vivid images with physical presence. SoundStage reported a soundstage as deep and complete as it had heard in its listening room, while other listening notes praise width, depth, and layering.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
96/100
The PA 3100 HV is repeatedly described as exceptionally and meticulously made. Reviews cite flawless finish and assembly, a massive 40mm aluminum front panel, substantial internal engineering, and a robust 84-pound chassis; one reviewer found no flaws in its construction.
Features Connectivity
91/100
This is an extensively equipped analog integrated amplifier, with multiple RCA and balanced XLR inputs, RCA and XLR pre-outs, a headphone output, dual speaker connections, recorder output, remote control, and surround pass-through. It deliberately omits onboard DAC, streaming, and a standard phono stage, although MM/MC phono and room-EQ modules are available as options.
Value for Money
88/100
At approximately $23,500 to $24,800 in the reviewed configurations, the PA 3100 HV is plainly a premium purchase, and SoundStage notes that similarly priced separates are possible. However, reviewers also regard its separates-like performance, engineering, craftsmanship, and long-term ownership appeal as persuasive justification, with Future Audiophile calling it a smart purchase relative to its cost.
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Verified Dealers
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Authorized dealers for T+A PA 3100 HV
- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
- Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- American Sound — in-store — Richmond Hill, Ontario, Canada (website)
- AUDIO 2000 — in-store — Wuppertal, Nordrhein-Westfalen, Germany (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Concierge — online and in-store — England, United Kingdom (website)
- AUDIO EXCLUSIVE — in-store — Wels, Oberösterreich, Austria (website)
- Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
and 95 more verified dealers