Quad II Forty Mono Power Amplifier (Pair)
Frequently Bought Together
Product Overview & Specifications
The chassis has been substantially increased in size to accommodate the much larger components, all of which are hard wired by hand following a similar topology to the original.
The modern listener demands a higher output than the fifteen watts of the original Quad II. 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.
All Quad products are expected to last a lifetime even longer. Many Quad customers still derive immense pleasure listening to products built over fifty years ago.
These new amplifiers are no exception and with periodic servicing and a caring hand you can expect the performance of these amplifiers to continue for many decades to come.
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

