Unison Research Triode 25 | EL34 triode/pentode valve integrated amplifier, black | 2 YEAR WARRANTY

Name: Unison Research Triode 25 | EL34 triode/pentode valve integrated amplifier, black | 2 YEAR WARRANTY
Brand: Unison Research
SKU: 56798
Price: 3480.00 CHF
Availability: InStock

Reference 56798

CHF3,480.00 Tax included

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Unison Research Triode 25, a push-pull Class AB valve integrated amplifier with four EL34 switchable between triode and pentode mode. It delivers 45 W per channel in pentode and 25 W in triode, with user-adjustable bias.

Description
Product Details

Black valve amplifier at three-quarter angle, four EL34 between two chrome shields

Successor to the Triode 20

For the brand's 25th anniversary, Unison Research completely redesigned the Triode 20 and named it Triode 25. Its development took a long design and testing period, despite the experience gained with its predecessor. The chassis measures 30 x 45 x 20 cm and weighs 20 kg, with an infrared remote control for volume.

Close-up of the EL34 and small signal valves on their steel plate

Push-pull of four EL34

Four EL34 in ultralinear push-pull, in Class AB, handle the amplification, preceded by two ECC83 and one ECC82. In pentode mode the Triode 25 delivers over 45 W per channel into 6 ohms, with very low harmonic distortion across the whole audio band. Output impedance is 6 ohms and maximum power consumption is 300 W.

Top view with the bias meter and the mode switches

Triode, pentode and bias

A switch on the top moves the output valves from pentode to triode mode, which lowers the power to 25 W per channel. Bias is set using the built-in meter, and negative feedback can be chosen between 5 dB and 1.8 dB. These settings let the amplifier be matched to the loudspeakers and to personal taste.

Rear panel with speaker terminals, six pairs of RCA sockets and USB port

Inputs, tape and USB DAC

The amplifier has four line inputs, one of them a tape input, at 47 kΩ / 50 pF, plus a USB DAC input for a computer. A tape output and a stereo RCA subwoofer output complete the connections. The valves are covered by a 3-month warranty.

Reference 56798

Data sheet

Product Type: Integrated amplifier
Tube amplifier
Features: 47 kΩ / 50 pF input impedance
Adjustable bias
Infrared remote control
Negative feedback 5 dB or 1.8 dB
Brand: Unison Research
Integrated DAC: Yes
Audio outputs: 1 RCA subwoofer output (stereo)
1 tape output
Number of channels: 2
Digital inputs: USB
Analog inputs: 4 line inputs (1 tape)
Output power: 45 W in pentode mode, 25 W in triode mode
Color: Black
Technology: 2 x ECC83, 1 x ECC82, 4 x EL34
Series: Triode 25
Nominal impedance: 6 ohms
Amplification technology: Push-pull, ultralinear, Class AB
Power consumption: 300 W max.
Width: 30.0 cm
Depth: 45.0 cm
Height: 20.0 cm
Unit weight: 20.0 kg