{"product_id":"quad-303-power-amplifier-good","title":"Quad 303 - Power Amplifier - Good","description":"\u003ch1\u003eQuad 303 - Power Amplifier - Good\u003c\/h1\u003e\n\n\u003ch2\u003eWhy This One\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eGood condition - clearly used but works as it should\u003c\/li\u003e\n  \u003cli\u003eFully tested - all applicable functions verified working\u003c\/li\u003e\n  \u003cli\u003eLegendary Class AB design with under 0.002% THD and 10A output current capability.\u003c\/li\u003e\n  \u003cli\u003eA 50W-per-channel amplifier at a significant saving over the new retail price.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCondition: Good\u003c\/h2\u003e\n\n\u003cp\u003eThis Quad 303 is a good-condition power amplifier. It has passed our 8-point functional test, with 2 item(s) not applicable to this unit. Please review all photos carefully, as they provide an accurate representation of the cosmetic condition of the product.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuad 303\u003c\/li\u003e\n  \u003cli\u003eNo additional accessories included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout This Model\u003c\/h2\u003e\n\u003cp\u003eThe Quad 303 is a stereo power amplifier built around a fully complementary, symmetrical Triples Output Stage running in Class AB, paired with a custom 200VA toroidal transformer. It delivers 50W per channel into 8 ohms or 70W per channel into 4 ohms in stereo mode, and can be bridged to produce 140W into 8 ohms or 170W into 4 ohms. Total harmonic distortion is kept to under 0.002% at 1kHz, while a maximum output current of 10A means it handles demanding loads - including electrostatic speakers - with ease. Connectivity includes both RCA and XLR line inputs, stereo speaker binding posts, and 12V trigger I\/O for system integration. The design traces its lineage to the original 1967 circuit that earned a 1969 Council of Industrial Design Award, updated here with modern components and robust protection against output shorting, overdriving, and disconnection.\u003c\/p\u003e\n\n\u003cp\u003eA great opportunity to own a Quad 303 at this price point.\u003c\/p\u003e","brand":"Quad","offers":[{"title":"Default Title","offer_id":54720869400913,"sku":null,"price":165.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/6913\/0833\/files\/d137ef85-5e31-4a86-9812-f789573bb704.jpg?v=1787927024","url":"https:\/\/www.audiotrader.co.uk\/products\/quad-303-power-amplifier-good","provider":"Audio Trader","version":"1.0","type":"link"}