STATUS - SOLD
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Description :
The Quad 77 Integrated Amplifier was a very radical design that employed an microprocessor to control volume, balance and input switching digitally. The Quad 77 Integrated Amplifier had just 2 line inputs and a tape loop and there was no phono stage. It was also one of the first products to make use of Quad's system bus that allowed other Quad 7 series equipment to be connected to the Quad 77 Integrated Amplifier via a computer ribbon cable that linked the Quad equipment together via a serial port. This was something that angered hi-fi purists as the QUADLINK on the Quad 77 Integrated Amplifier carried audio,data, and power signals on the same cable which could never be described as audiophile.
The Quad 77 Integrated Amplifier also did not take advantage of Quad's patented current dumping circuit and instead employed a very simple but stable class A/B output stage which generated about 80 watts per channel into 8 ohms. The Quad 77 Integrated Amplifier was in production from 1996 to 1999 and won 'European Amplifier of the Year' in 1997. In total 5000 units were produced before the Quad 7 series was replaced by the Quad 9 series,
Specifications :
Inputs.............................................Source1, 2 and Tape
Input sensitivities.............................300mV (Source1, 2 and Tape)
Load impedance..............................33kOhm (Source1, 2 and Tape)
Signal/noise....................................>100dB
Output level.....................................775mV (Preamp-out)
.....................................Same as input level (Tape-out)
Residual noise.................................'A' weighted. Volume control at minimum -105dB with reference to full output.
Interchannel balance........................+/-0.3dB with volume control varied between maximum to -70dB
Maximum power output.....................84 Watts into 8 ohm <0.05% dtot
.....................115 Watts into 4 ohm <0.05% dtot
Maximum current output...................11A peak per channel
Distortion.........................................Continous sine wave into 8ohm resistive load, any level up to 70 Watts
.........................................20Hz; <0.005% (22kHz bandwidth)
.........................................1kHz; <0.005% (22kHz bandwidth)
.........................................20Hz; <0.05% (80kHz bandwidth)
Output internal impedance................1.5uH parallel with 3.3 ohm
DC offset.........................................Typically <20mV
Frequency response (ref 1kHz).........-0.3dB at 10Hz and 20kHz
...........-0.3dB at 3Hz and 50kHz
Power response (ref 1 kHz)...............-0.75dB at 10Hz and 20kHz
Crosstalk........................................<-90dB at 1kHz
Hum and noise................................-105dB ref. 75W (22kHz measurement bandwidth unweighted)
Stability...........................................Unconditionally stable with any load and any signal
Power consumption..........................30 to 350VA depending on signal level
..........................<10 VA (in standby)
Dimensions(w x d x h)......................32 x 30.5 x 7 cm
Weight............................................6 kg
Miscellaneous :
Made in...........................................UK
Box.................................................Yes
Manual............................................Yes
Condition.........................................9 / 10 (Good condition)
Reviews :
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