UNISON RESEARCH TRIODE 25

Tube integrated amplifier

Three are the amplifiers which can be considered the Unison Research success:
The Simply Two, Triode 20 and the famous Absolute.
The Triode 25, as its predecessor Triode 20, is an amplifier with a push-pull of EL34.
The advantages resulting from a push-pull structure are important:
-higher output power
-higher performance which, as a result, generates less heat with positive effects on the shelf life of output tubes. Obviously there is also a great energy conservation.
-absence of static polarization of the output transformer, with a resulting better performance in this section.
The new amplifier Triode 25 is the result of a long and meticulous work of planning and trial.
The Triode 25 can work in two different ways: triodo and pentodo. With the latter, it can supply a maximum output power of more than 45 watts per channel on a load of 6 ohm, with an harmonic distortion extremely restrained on the whole sound band.

Specifications:
Output stage: Push-pull, ultralinear, Class-AB
Output power: Approx. 45 watt per channel Pentode configuration Approx. 25 watt per channel Triode configuration
Output impedance: 6 Ohm
Input impedance: 47 kohm/50 pF
Negative feedback: 5dB or 1.8 dB
Valve complement: 2 x ECC83 (12AX7) 1 x ECC82 (12AU7) 4 x EL34 (6CA7)
Power consumption: 300 watt (Max.)
Fuses: T6.3A from 100V to 130V T3.15A from 220V to 250V
Dimensions: 30cm x 45cm x H20cm
Net weight: 20kg
Shipping dimensions (cm): 40 x 57 x 32 H
Shipping weight: 23kg