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Compared with the obvious alternative—another ageing 50-watt British power amp—the Quad 306 at £249 is a strong deal. It sits below the supplied £257 25th-percentile figure and well under the £306 median from 19 comparable listings, so this is bargain territory rather than merely fair pricing.
The 306 remains well regarded for its clean, controlled, musically engaging presentation and compact, straightforward design. Its 50 watts per channel suits sensible real-world speakers, while Quad’s current-dumping circuit gives it more composure than the modest rating suggests. Because the listing gives no condition or service detail, check for channel balance, hum, working protection circuitry and any evidence of capacitor replacement. Those checks matter with an amplifier of this age, but at £249 there is enough value to justify a careful inspection—and potentially budgeting for service if it proves original.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Quad, the venerable British hi-fi brand, traces its origins to 1936 in London, when engineer Peter J. Walker founded S.P. Fidelity Sound Systems, soon renamed the Acoustical Manufacturing Company. Relocating to Huntingdon in 1941 after wartime bombing, the firm shifted from public address gear to domestic audio amid post-war demand for superior sound reproduction. Walker's pioneering ethos—prioritizing "the closest approach to the original sound"—defined Quad from its early QA12 amplifiers, adopted by the BBC, to the iconic Quad I of 1953.
The brand excels in amplifiers and electrostatic loudspeakers, revolutionizing both categories. The Quad II power amplifier of 1953 introduced cathode coupling for vanishingly low distortion, while the 1956 ESL 57 delivered the world's first full-range electrostatic speaker, employing a massless film diaphragm for unparalleled transparency and transient speed. Quad advanced into solid-state with the 1967 303 and transistor designs featuring innovative "Triples" output stages, later expanding to integrated amps like the 99 series, moving-coil speakers, and modern electrostatic models such as the ESL 988 and 989.
Today, under the International Audio Group since 1997, Quad holds a prestigious position in the high-end market, revered by audiophiles for its unyielding pursuit of accuracy over trends. Its heritage components command vintage collector status, yet contemporary offerings maintain a niche boutique appeal among discerning buyers seeking refined, distortion-free reproduction that honors Walker's legacy.
See all Quad listings on RADAR.
