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Quad QC 24 Preamplifier Very good. Please note that we are currently away and all shipping will be suspended until 12th May 2025.
The QC24 is a well-regarded line-stage with a musical, full-bodied presentation and a very practical long-life valve setup, so £550 sits in fair-to-good territory for a clean used example. I’d call it a sensible buy rather than a steal: not cheap enough to be a bargain-basement grab, but comfortably in the zone if the unit is tidy and working properly.
What makes it appealing is the easy, refined sound and the fact it’s been a strong match with Quad power amps for years, especially if you like a slightly warm, open, low-fatigue preamp. A good-condition example can be a genuinely satisfying piece to live with, and if the listing includes the original box, remote, and proof of recent service or careful ownership, that adds real value.
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.
