Quad 909 Power Amplifier Current Dumping 140W Stereo Tested Working UK

Quad 909 power amplifier in good cosmetic condition with a few light marks, in full working order, nice and clean. Lovely example and sounds glorious!

Specifications

• Audio Inputs: 1
• Audio Outputs: 1
• Colour: Silver/Gold
• Number of Inputs: 1
• Number of Outputs: 1
• Power: 140W
• Country of Origin: China
• Year Manufactured: 2000s
• Power Output: 250 W RMS per channel into 4Ω
• Amplifier Topology: Current Dumping (solid-state)
• Total Harmonic Distortion: <0.01% (100 W into 8Ω, 20 Hz–20 kHz)
• Frequency Response: 13 Hz – 40 kHz (−1.0 dB)
• Signal-to-Noise Ratio: 108 dB
• Input Sensitivity: 775 mV
• Minimum Speaker Impedance: 4Ω
• Dimensions: 321 × 140 × 240 mm
• Weight: 12 kg
• Mains Voltage: 240V
• Power Output (4Ω, stereo): 140 W RMS per channel into 8Ω
• Amplifier Topology: Current Dumping (solid-state; Class A error-correction + Class B output stage)
• Total Harmonic Distortion (THD): <0.01% (100 W into 8Ω, 20 Hz–20 kHz)
• Frequency Response: 13 Hz – 40 kHz (–1.0 dB)
• Signal-to-Noise Ratio: 108 dB (ref. 140 W, 20 Hz–20 kHz bandwidth)
• Input Sensitivity: 775 mV (RCA line input)
• Inputs: 1× stereo RCA line input; 1× Quad AMPBUS (D-sub 15-pin, for Quad 99 series integration)
• Minimum Speaker Impedance: 4Ω
• Crosstalk (channel separation): –90 dB at 1 kHz
• Dimensions (W × H × D): 321 × 140 × 240 mm (plus connectors)
• Weight: 12 kg
• ESL Speaker Compatibility: Compatible with ESL-63, ESL-988, ESL-989; not for use with original ESL without protection circuit