{"product_id":"quad-909-power-amplifier-current-dumping-140w-stereo-tested-working-uk","title":"Quad 909 Power Amplifier Current Dumping 140W Stereo Tested Working UK","description":"\u003cp\u003eQuad 909 power amplifier in good cosmetic condition with a few light marks, in full working order, nice and clean. Lovely example and sounds glorious!\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"spec-list\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Outputs:\u003c\/strong\u003e 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Silver\/Gold\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Inputs:\u003c\/strong\u003e 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Outputs:\u003c\/strong\u003e 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 140W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear Manufactured:\u003c\/strong\u003e 2000s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 250 W RMS per channel into 4Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier Topology:\u003c\/strong\u003e Current Dumping (solid-state)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e \u0026lt;0.01% (100 W into 8Ω, 20 Hz–20 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 13 Hz – 40 kHz (−1.0 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e 108 dB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 775 mV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Speaker Impedance:\u003c\/strong\u003e 4Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 321 × 140 × 240 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMains Voltage:\u003c\/strong\u003e 240V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Output (4Ω, stereo):\u003c\/strong\u003e 140 W RMS per channel into 8Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier Topology:\u003c\/strong\u003e Current Dumping (solid-state; Class A error-correction + Class B output stage)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion (THD):\u003c\/strong\u003e \u0026lt;0.01% (100 W into 8Ω, 20 Hz–20 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 13 Hz – 40 kHz (–1.0 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e 108 dB (ref. 140 W, 20 Hz–20 kHz bandwidth)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 775 mV (RCA line input)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1× stereo RCA line input; 1× Quad AMPBUS (D-sub 15-pin, for Quad 99 series integration)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Speaker Impedance:\u003c\/strong\u003e 4Ω\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrosstalk (channel separation):\u003c\/strong\u003e –90 dB at 1 kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 321 × 140 × 240 mm (plus connectors)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESL Speaker Compatibility:\u003c\/strong\u003e Compatible with ESL-63, ESL-988, ESL-989; not for use with original ESL without protection circuit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chorlton Analogue","offers":[{"title":"Default Title","offer_id":58362412663171,"sku":"99A","price":675.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1610\/2401\/files\/12_68613d07-871f-476d-b021-024fb6ffb48b.jpg?v=1782814979","url":"https:\/\/chorltonanalogue.com\/products\/quad-909-power-amplifier-current-dumping-140w-stereo-tested-working-uk","provider":"Chorlton Analogue","version":"1.0","type":"link"}