Quad · Preamplifiers

QC Twenty Four

A tube preamp with relay input switching and a 6111WA double triode.

fig. 01 · preamplifiers

QC Twenty Four

Quad QC Twenty Four
fig. 01 · QC Twenty Fourphotograph · Quad

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

ModelQC Twenty Four
Valve Complement1x 6111 twin triode
THD @ 1V RMS<0.2%
Frequency response5Hz - 50kHz (+0dB/-0.5dB)
Hum and NoiseBetter than -80dB
Line Stage Gain15dB
Recommended Minimum Load50 k Ohms
Inputs5 x Line level
Power Consumption15VA maximum
Product typetube preamplifier
SeriesQC Twenty Four
All 11 specificationsFewer specifications