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specifications
Model
Power Output
THD @ 700Hz
Residual hum & noise
Frequency Response
Damping Factor
Power Consumption
Loudspeaker Taps
Valves
Sensitivity
*The Quad II Classic power amplifiers are supplied in matched pairs.
Model
QC-twentyfour
Valve Complement
1 x 6111 twin triode
‹0.2%
THD @ 1V
RMS
0.02% @ 1W
5Hz–50kHz (+0dB/-0.5dB)
Frequency Response
Hum and Noise
Better than -80dB
15dB
Line Stage Gain
Recommended Min. Load
50k ohms
5 x Line level
Inputs
2 x Buffered tape loops
II-forty
II-classic*
40W
15W
RMS
0.3% @ 40W
0.3% @ 12W
0.03% @ 1W
Better than -80dB
Better than -90dB
10Hz–30kHz(+0dB/-0.5dB)
10Hz–20kHz(+0.2dB)
20 @ 700Hz
11.75 @ 700Hz
180W maximum
90Va maximum
4 ohm and 8 ohm
8 ohm
2 x 6SH7 Input
2 x EF86 input
2 x KT88 Output
2 x KT66 Output
1 x 5U44G Rectifier
1 x GZ34 Rectifier
1V
1.4V
RMS
RMS
RMS
QC-twentyfour P
Valve Complement
4 x 6111
THD
‹0.08% (A-weighted)
Frequency Response
20Hz–20kHz (+0dB/-0.5dB)
Hum and Noise
Better than 60dB
Input Impedance
47Ω
Moving magnet
Moving coil
10Ω
Stage Gain
High sensitivity
1.3mV (MM)/130uV (MC)
Medium sensitivity
2.6mV (MM)/260uV (MC)
Low sensitivity
5.2mV (MM)/520uV (MC)
Nominal output level
(ref 5.2mV, MM, Low)
1.0
Inputs
Selectable MC/MM cartridge
Outputs
1 x fixed line level
1 x variable line level
Power consumption
15 VA maximum
15
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