unison

SINGLE 90

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  • Regular price $0.00


DESCRIPTION

Unico 90 is a class AB integrated amplifier with zero feedback that, like the most valuable tube tubes, uses only two stages. The heart of the Unico 90 circuit is its hybrid structure, with all the gain (and the "character") determined by the single tube stage, made with ECC83 and ECC81 tubes configured to create a single stage with adequate gain and lowest possible output impedance.

SPECIFICATIONS 

  • Power 100 + 100W RMS on 8Ω / 160 + 160W RMS on 4Ω
  • Frequency Response: -1dB @ 12Hz and 45kHz -3dB
  • Input Impedance: 21Kohm // 300pF
  • Sensitivity: 860mV RMS
  • Input stage and gain: Pure Class A, with ECC83 tubes + double totem pole of ECC81
  • Output stage: Class AB thermostable, complementary Hexfet (3 pairs per channel)
  • Number of stages: 2, signal amplification and power amplification
  • Inputs: 6 line (3 unbalanced, 2 balanced, 1 unbalanced bypass)
  • Line outputs: 1 tape, 1 sub (with volume control)
  • Output connections: 4 + 4 bi-wiring
  • Global feedback factor: 0 dB
  • Local feedback factor: 0 dB
  • THD: <0.15% @ 1kHz, 1W 
    <0.5% @ 1kHz, 10W 
  • <0.4 ohm, resistive to all audio frequencies
  • Absorption: 550 W (maximum power on 8 ohms)
  • Dimensions: 43.5cm x 44cm x 18cm h
  • Weight: 20 kg