{"product_id":"quad-303-power-amplifier-vintage-early-serial-number-uk-good-working-order","title":"Quad 303 Power Amplifier Vintage Early Serial Number UK Good Working Order","description":"\u003cp\u003eQuad 303 power amplifier in good working order, early serial number. Clean overall with only minor marks.\u003c\/p\u003e\u003cp\u003eThe Quad 303 is a solid-state stereo power amplifier made by the Acoustical Manufacturing Company in Huntingdon, England, designed to partner with the Quad 33 preamplifier.\u003c\/p\u003e\n\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul class=\"key-spec-list\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier Topology:\u003c\/strong\u003e Class AB, solid-state (Triples output stage)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20 Hz – 20 kHz (±0.3 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion (THD):\u003c\/strong\u003e \u0026lt;0.002% (1 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoudspeaker Impedance Range:\u003c\/strong\u003e 4–16 ohms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker Output:\u003c\/strong\u003e Gold-plated 4mm binding posts (stereo pair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"spec-list\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e 2\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e England\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear Manufactured:\u003c\/strong\u003e 1960s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e 5-pin DIN input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMains Voltage:\u003c\/strong\u003e 240V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmplifier Topology:\u003c\/strong\u003e Class AB, solid-state (Triples output stage)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Types:\u003c\/strong\u003e 1x RCA (single-ended), 1x XLR (balanced)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeaker Output:\u003c\/strong\u003e Gold-plated 4mm binding posts (stereo pair)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoudspeaker Impedance Range:\u003c\/strong\u003e 4–16 ohms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20 Hz – 20 kHz (±0.3 dB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion (THD):\u003c\/strong\u003e \u0026lt;0.002% (1 kHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;108 dB (A-weighted)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 700 mV RMS (RCA), 1.5 V RMS (XLR)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Output Current:\u003c\/strong\u003e 10A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 325 × 176 × 120 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8.4 kg\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chorlton Analogue","offers":[{"title":"Default Title","offer_id":62691690512771,"sku":"207A","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1610\/2401\/files\/12_142ab027-1a8c-424f-a694-f1700e01c175.jpg?v=1790198029","url":"https:\/\/chorltonanalogue.com\/products\/quad-303-power-amplifier-vintage-early-serial-number-uk-good-working-order","provider":"Chorlton Analogue","version":"1.0","type":"link"}