Quad II-forty valve power amplifier (pair)

Quad II-forty valve power amplifier (pair)

Sorry, This product is no longer available



The new Quad II-forty uses larger output valves, KT88s instead of KT66s, and a more robust power supply utilising a 5U4G rectifier valve. The input valves are now military specification 6SH7s instead of EF86s.

Valve complement 2 x KT-88
 2 x 6SH7
 1 x 5U4G
Total Harmonic Distortion at 700 Hz 0.3% at 40W
 0.03% at 1W
Frequency Response 10Hz to 30kHz (+0 / -0.5dB)
Damping Factor 20 at 700Hz (8 ohm)
Hum and Noise better than -80dB
Loudspeaker taps 4 ohm and 8 ohm
Sensitivity 1 V RMS
Power Consumption 180W maximum


Providing your item is in stock, the order is usually dispatched within 24 hours. Postage and packing is completely free for orders over £100*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.


Orders are sent via our couriers' DPD on a next-day-delivery service and usually, take between 1 and 3 days. 


Please use this link to find more detailed delivery information.


*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however, delivery to these locations will incur a charge and can only be sent via a 2-day service.

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