Quad II-Forty Power Amplifiers

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Priced per unit - for a stereo pair buy two.

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 push-pull configuration, while a choice of 4 Ohm or 8 Ohm taps allow for a wide choice of loudspeaker configurations.

More Information
Manufacturer Link Quad II-Forty Power Amplifiers
Manufacturer Quad
Free warranty 3 years
Delivery Charge Free
Delivery Time Normally 1 - 5 Working Days (Covid-19 and Brexit Delays Possible, contact us for more information)
Card Surcharge No
See more Quad products.

Quad II-Forty Power Amplifiers


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


2 x 6SH7 Input
                2 x KT88 Output
                1 x 5U4G Rectifier

Input Sensitivity     1V RMS