Quad - QUAD 303 and 33 Hi-fi set - Multiple models
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Description from the seller
The QUAD 33 preamplifier and QUAD 303 power amplifier are legendary hi-fi components originally produced between 1967 and 1985, known for their reliability and musical performance. I bought it new in 1979. Everything is still in its original state. Never repaired. For the true enthusiast collector!!
QUAD 303 Power Amplifier (Specifications)
The 303 is a stereo power amplifier that uses a triac-protected design (current dumping).
Quad revision
Quad revision
Power: 2 x 45 Watts into 8 Ohms (continuous, both channels driven).
Power (4 Ohms): Can deliver up to about 70W per channel at lower impedances.
Frequency response: 30 Hz - 35 kHz (+/- 1 dB).
Total Harmonic Distortion (THD): < 0.1% at 1000 Hz and 45W into 8 Ohms.
Input sensitivity: 0.5 V (for maximum output).
Input impedance: 25 kOhm.
Speaker outputs: 8 Ohm and 16 Ohm (connections via DIN bus, do not earth them!).
Power supply: 100-250V (switchable).
Weight: approx. 8.2 kg.
QUAD 33 Preamplifier (Specifications)
The 33 is designed to be flexible and offers diverse inputs with adjustable sensitivity.
Inputs (Sensitivity / Impedance):
Disc (Phono): Adjustable via modules (1.5mV, 3mV, 5mV / 47k - 68k Ohm).
Radio 1: 100mV / 300k Ohm.
Radio 2: 100mV / 300k Ohm.
Tape (Replay): 100mV / 300k Ohm.
Outputs:
Tape (Record): 100mV.
Main (to 303): 0.5V (balanced via a special cable).
Frequency response: 30 Hz - 20 kHz (+/- 0.5 dB).
Distortion: < 0.02% at 1V output.
Tone controls: Unique QUAD filters (Bass/Treble and 'Slope' filters) for accurately correcting recordings.
The QUAD 33 preamplifier and QUAD 303 power amplifier are legendary hi-fi components originally produced between 1967 and 1985, known for their reliability and musical performance. I bought it new in 1979. Everything is still in its original state. Never repaired. For the true enthusiast collector!!
QUAD 303 Power Amplifier (Specifications)
The 303 is a stereo power amplifier that uses a triac-protected design (current dumping).
Quad revision
Quad revision
Power: 2 x 45 Watts into 8 Ohms (continuous, both channels driven).
Power (4 Ohms): Can deliver up to about 70W per channel at lower impedances.
Frequency response: 30 Hz - 35 kHz (+/- 1 dB).
Total Harmonic Distortion (THD): < 0.1% at 1000 Hz and 45W into 8 Ohms.
Input sensitivity: 0.5 V (for maximum output).
Input impedance: 25 kOhm.
Speaker outputs: 8 Ohm and 16 Ohm (connections via DIN bus, do not earth them!).
Power supply: 100-250V (switchable).
Weight: approx. 8.2 kg.
QUAD 33 Preamplifier (Specifications)
The 33 is designed to be flexible and offers diverse inputs with adjustable sensitivity.
Inputs (Sensitivity / Impedance):
Disc (Phono): Adjustable via modules (1.5mV, 3mV, 5mV / 47k - 68k Ohm).
Radio 1: 100mV / 300k Ohm.
Radio 2: 100mV / 300k Ohm.
Tape (Replay): 100mV / 300k Ohm.
Outputs:
Tape (Record): 100mV.
Main (to 303): 0.5V (balanced via a special cable).
Frequency response: 30 Hz - 20 kHz (+/- 0.5 dB).
Distortion: < 0.02% at 1V output.
Tone controls: Unique QUAD filters (Bass/Treble and 'Slope' filters) for accurately correcting recordings.
Details
Era
1900-2000
Brand
Quad
Model
QUAD 303 and 33
Multiple models
Yes
Physical condition
Good
Number of objects
2
Includes
Brochures, Original user manual, Power cord
Year of manufacturing
1979
Weight
11.2 kg
Functional condition
Tested and working/playable
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