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 QUAD QII FORTY Power Amplifier 




The Quad II-forty power amplifier is much more than a tribute to one of the most famous designs in audio – but refined and powerful in the modern sense of the terms. Although the circuit topology has changed a little from the original, significantly better components and a brand new transformer design have been engineered. While still being delicately balanced a fast, crisp and detailed sound is achieved, whilst producing an output current suitable for modern loudspeakers, including our very own ESL. KT-88 output valves work in a push-pull configuration, while a choice of 4 Ohm or 8 Ohm taps allows for a wide choice of loudspeaker configurations.


QUAD QII FORTY Power Amplifier

Finish: Lancaster Grey
  • Power Output 40W RMS
    THD @ 700Hz 0.3% @ 40W
    0.03% at 1W
    Residual Hum and Noise Better than -80dB
    Frequency Response 10Hz - 30kHz (+0dB, -0.5dB)
    Damping Factor 20 @ 700Hz (referred to 8 Ohms)
    Power Consumption 180VA maximum
    Loudspeaker Taps 4 and 8 Ohms
    Valves 2 x 6SH7 Input
    2 x KT88 Output
    1 x 5U4G Rectifier
    Input Sensitivity 1V RMS
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