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Unison Research Triode 25 inc USB DAC (Black)

Stereo Valve Amplifier

In-store Clearance item

Open Box Guide Price (1 available across all stores) £2759.950000
Last brand new price £3250.000000

Please remember

These are Clearance items and therefore condition and accessories / promo items supplied may vary. This is also why we use guide prices for in-store items, as managers price these units according to state and completeness.

Please call / email the store to check the price / stock / condition and reserve your Clearance bargain before making a special journey.

Unfortunately, due to costs, and size, TVs can't be mail ordered from store or transferred between stores - sorry!

Please note that extended guarantees are not available on these products.

Custom Installation

To get the most out of this product we recommend our expert design and installation service. Find out more.

Compare (3 max)
”Yet another superb design from Unison Research. Great to use and even better to listen to.” ’What Hi-Fi?’ – 5 Star review.

The unique sound of valves

Rather than using transistors, the Unison Research Triode 25 brings valves into play, giving a unique sound. The amp uses the legendary EL34 valves (plus ECC82 and ECC83) for a fluid and natural sound that only comes from a valve amp. Switchable between Triode and Pentode modes, it also has the potential for a more powerful sound than smaller valve amps.

Switch between Triode and Pentode modes
Triode and Pentode modes let you choose the type of sound you prefer for your particular music and speakers. Triode is the punchier, with the power output hitting 45 watts per channel (at 6 ohms). Pentode is the smoother setting, with a real fluidity of sound. This outputs around 25 watts per channel (again, at 6 ohms).

Built-in DAC for direct, digital sound
Featuring a built-in DAC (Digital to Analogue Converter), with USB input, simply connect to your computer or smartphone for direct, digital audio. Compatible with file sizes up to 32bit/384kHz and DSD 128 compliant, this is an excellent way of playing your digital music streaming services and stored files, fuss-free.

All the features you need
Unlike some ‘barebones’ valve amps, the Triode 25 has all the basics you need. As well as the built-in DAC, there are four, line level inputs. The variable output is ideal for an active subwoofer. There’s a line level output for recording, too. For convenience, a remote control is also supplied.

Italian style
Just as you’d expect from this luxurious Italian brand, the styling is exquisite. There’s a choice of gloss black or cherry wood facia. The chromed protective valve cover, swooping metal valve holders and crackle black finish are other highlights from this super-stylish amp.

Listen to an amp that’s serious about sound, with the Unison Research Triode 25.
Analogue RCA Inputs
Audio Outputs
Pre Output
Shared with Subwoofer
Speaker Sets
Speaker Sets FILTER
x 1
Sub Output
Sub Output
USB Input
Power Output
45 x 2 (Triode) 25 x 2 (Pentode) at 6 ohms
Power Output - Watts per CH
30 - 59
Dimensions WxHxD (mm)
300 x 200 x 450
Weight (KG)
Remote Control
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  • Representative 21.9% APR (variable)
  • Purchase rate 21.9% p.a. (variable)
  • Assumed credit limit £1,200
Subject to status. Terms and conditions apply. Richer Sounds Limited acts as a broker and offers credit solely from PayPal (Europe) S.a rl et Ice, S.C.A, 22-24 Boulevard Royal, L-2449, Luxembourg.
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We offer 6 and 10-month options.

Call your local store or our telesales team for details

For purchases over £500, you can settle the balance in 6 months, and in 10 months on purchases over £1000 and pay no interest whatsoever. If you settle part of your loan in the deferral period you won’t pay interest on that part. You can still pay off the loan sooner if you make additional payments. If you’d rather spread the cost over 36 months, you can set up a loan repayment plan when the payment-free period comes to an end at 19.9% APR representative. Subject to application, financial circumstances and borrowing history. Ts&Cs apply. Richer Sounds Limited acts as a credit broker and not the lender. Creation Consumer Finance Limited acts as the lender. Find out more information and eligibility criteria here.