Quad 303 Power Amplifier Heritage The Quad 303 power amplifier fuses classic British audio heritage with refined modern engineering. Its Class AB topology uses Quad’s legendary Triples Output Stage for remarkable control and natural musical flow. A custom 200 VA toroidal transformer powers every note with authority, while stereo and bridged modes adapt easily to your needs. Delivering 50 watts per channel into 8 ohms and up to 170 watts in bridged mode, the 303 partners effortlessly with a wide range of loudspeakers. Clarity With distortion below 0.002%, the Quad 303 reproduces music with exceptional precision. Its 20Hz–20kHz frequency range captures deep bass, detailed mids, and silky highs. Both RCA and XLR inputs ensure compatibility with diverse systems, while a 12V trigger offers integration convenience. The design prioritises efficiency, drawing less than 0.5W in standby, making it as practical as it is musical. Craft Finished in the timeless Quad Grey, the 303 exudes understated elegance. At 8.4kg, it is solid yet compact, fitting easily into modern setups. Built for reliability, it performs equally well in stereo or bridged mono mode. Supplied with a power cord, remote, and user manual, the Quad 303 is ready to deliver decades of listening pleasure with style and strength. ModelQUAD 303 General DescriptionPower Amplifier Design & Core TechnologyClass AB Power AmplifierQUAD 303 Triples Output StageCustom 200 VA Toroidal TransformerStereo/Bridge mode selectable Inputs1 × Line (RCA)1 × Balanced (XLR) OutputsSpeaker binding posts (stereo / bridged mono)12 V Trigger In12 V Trigger Link Gain 29 dB Rated Power OutputStereo: 2 × 50 W (8 Ω, THD 2 × 70 W (4 Ω, THD Bridged: 140 W (8 Ω, THD 170 W (4 Ω, THD Frequency Response20 Hz – 20 kHz (±0.3 dB) Total Harmonic Distortion (THD)<0.002 % (1 kHz) Input Impedance15 kΩ (Line)22 kΩ (XLR) Input Sensitivity700 mV rms (Line)1.5 V rms (XLR) Signal-to-Noise Ratio>108 dB (A-weighted) Max Output Current10 A Standby Power Consumption<0.5 W Net Weight8.4 kg Gross Weight9.5 kg Dimensions (W × H × D)120 × 176 × 325 mm Carton Size226 × 312 × 462 mm FinishClassic QUAD Grey Power Requirements220–240 V or 100–120 V, 50/60 Hz Standard AccessoriesPower Cord, Remote Control, User Manual
