A dream team of Rob Flain & Paul McConville (the world’s most experienced QUAD service engineers), Jan Ertner (30 years of experience in QUAD design), Peter Comeau (the acoustic director behind some of QUAD’s most successful loudspeakers) and David McNeill (the industrial designer responsible for two decades of QUAD innovations) were all a part of this labour of love, making no compromise in the demand for a product that could bear the name of 33 and 303.
The QUAD 303 power amplifier was intended for normal domestic use with loudspeakers of moderate efficiency, but was also used by broadcasting and recording studios, worldwide, who appreciate its excellent performance and dependability. The ethos hasn’t deviated.
General Description Power Amplifier
Design Philosophy and Core Technology
Class AB Power Amplifier
QUAD 303 Triples Output Stage
Custom 200VA Toroidal Transformer
Stereo/Bridge mode selection
Inputs
1 x Line, 1 x XLR
Outputs
1 x 12V Trigger
1 x Stereo Speaker, 1 x 12V Trigger (Link)
Power Amplifier Section
Gain
+29dB
Rated Power Output
Stereo: 2 x 50W (8 ohms, THD<1%)
Stereo: 2 x 70W (4 ohms, THD<1%)
Bridged: 140W (8 ohms, THD<1%)
Bridged: 170W (4 ohms, THD<1%)
Frequency Response
20Hz - 20kHz (+/-0.3dB)
Total Harmonic Distortion (THD)
<0.002% (1kHz)
Input Impedance
10k ohms
Input Sensitivity
700mVrms (Line)
1.5Vrms (XLR)
Signal-to-Noise Ratio (S/N)
> 108dB (A - weighted)
Max. Output Current
10A
General
Standby Power Consumption
<0.5W
Net Weight
8.4kg
Gross Weight
9.5kg
Dimensions (mm) (W x H x D)
120 x 176 x 325
Carton Size (mm) (W x H x D)
226 x 312 x 462
Finish
Classic QUAD Grey
Power Requirements (depending on region)
220 - 240V - 50 / 60Hz
100 - 120V - 50 / 60Hz
Standard accessories
Power Cord, Remote Control, User Manual
