Unison Research Unico 90 Amplifier


Reg. price £4,050.00

Price includes VAT

Item Condition: Ex-Demo Clearance
Store: Bristol
In Stock

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The Unico 90 integrated amplifier sits above the Primo and Seconda models in the Unico range.The Unico 90’s dual mono design gives this amplifier more power and control of your music. Boasting 160W (4Ω) per channel the Unico 90 is capable of driving some of the most demanding loudspeakers with ease and aplomb.

Unico 90 is a class AB hybrid integrated amplifier with zero feedback, as the most precious valve amplifiers uses only two stages. The heart of the Unico 90 circuit is found in its hybrid structure. All of the gain, and subsequently the "character" of the amp, is determined by the only tube stage made with ECC83 and ECC 81in particular multiple-parallel-totem-pole.

The Unico 90 is a dual-mono amplifier, and three pairs of thermo-stable Class AB HEXFETs are used per-channel to provide a powerful-yet-controlled 160W (4Ω) audio signal. Thanks to this design, the Unico 90 is able to work with a wide variety of modern loudspeakers, including many more demanding designs.

Output power: 100+100 W RMS su 8Ω / 160+160 W RMS su 4Ω
Frequency response: -1dB @ 12Hz e 45kHz -3 dB
Input impedance: 21Kohm // 300pF
Input sensitivity: 860mV RMS
Input stage: Pure A class, double triode totem pole ECC83 and parallel totem pole ECC81 This single stage due to the particular circuitry is able to amplify the input signal and drive directly the power stage.
Output stage: Class AB thermostable, complementary Hexfet (3 pairs for channel)
Number of stage: 2, This amplifier due to the particular circuitry is realized by only two stages: input stage and output stage, and use only local feedback
Input: 6 line (3 unbalanced, 2 balanced, 1 “bypass” unbalanced)
Line Outputs: 1 tape, 1 sub (volume controlled)
Output connectors: 4 + 4 bi-wiring
Global Feedback factor: 0 dB
THD: < 0.15% @ 1kHz, 1 W < 0.5% @ 1kHz, 10 W
Output resistance: <0.4 ohm, resistive on all audio frequencies
Power Consumption: 550 W (at max power on 8 ohm)
Dimensions: 43.5cm x 44 cm x 18 cm h

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