Stereo Pre Amplifier
Successor to the Mono Quad II pre-amplifier, the Quad 22 is a Stereo pre-amplifier featuring Quad's famous Bass, Treble and Filter controls.
The Quad 22 control unit may be used with a single Quad II power amplifier for single channel installation, or with two Quad II power amplifiers to provide single channel and stereo reproduction.
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.02%
Input sensitivity: 1.5mV (mic), 0.4mV (MM), 70mV (line)
Signal to noise ratio: 70dB (line)
Output: 250mV (line), 1.4V (Pre out)
Valve complement: 2 x EF86, 2 x ECC83
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Reviewed Sep 28th, 2013 by dominiquemichel
As I wrote for the Quad II amplifier, the Quadd 22 have small sized electrolityc capacitors. After changing them by new values in order to get 20 Hz without feedback in all stages, the sound is just better, and not only in the basses. The overall sound become cleaner and more precise, and the dynamic get much better in the basses.
Without these modiications, I will put it 7 or 8 stars, mainly because of the lack of attack in the basses with music styles like jazz-rock.