Quad · Preamplifiers
QC Twenty Four
A tube preamp with relay input switching and a 6111WA double triode.
fig. 01 · preamplifiers
QC Twenty Four

From Quad
QC Twenty Four is a valve preamp built around a 6111WA double triode and relay input switching. It is meant for analogue systems where source control and tube gain sit ahead of a separate power amp.
Specifications
| Model | QC Twenty Four |
|---|---|
| Valve Complement | 1x 6111 twin triode |
| THD @ 1V RMS | <0.2% |
| Frequency response | 5Hz - 50kHz (+0dB/-0.5dB) |
| Hum and Noise | Better than -80dB |
| Line Stage Gain | 15dB |
| Recommended Minimum Load | 50 k Ohms |
| Inputs | 5 x Line level |
| Power Consumption | 15VA maximum |
| Product type | tube preamplifier |
| Series | QC Twenty Four |