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Shipping prices are listed for the EU and US only but we will ship worldwide. Please contact us for more information on shipping------------------------------------------------------------------------------------------------------------Well preserved Hi-FI stereo power-amp from 1977. Serial number 19632.100 W / channel with 8 Ω load. Allows speaker loads from 4 to 16 Ω.This is a very compact amplifier, measuring 340 x 190 x 120 mm (L x D x H, including rubber feet). It weighs 9kg. Has been modified with the addition of two XLR inputs for professional applications. The XLR are wired for unbalanced operation, with PIN 2 for signal and PIN 1 and 3 grounded.Completely overhauled by strangelove audio :Full checkup and cleaningReplacement of electrolytic capacitorsNew thermal paste on heat sinksDoes not come with power cable, which is the standard 3 prong connector (IEC C13/C14). If you wish we can source one appropriate for your country's main plugs, for a modest extra fee and some extra delay. We will set the voltage and fuse to your country's specifications before shipping. A switch on the back allows to set the voltage for the following mains voltages : 110V, 120V, 130V, 220V, 230V, 240V.Shipping and packing:The item will be sent in a very well packed double box. The shipping rates shown on Reverb are via standard post for the EU and via UPS for the USA. We can also arrange shipping via different services if you prefer.Also available for local pickup in Paris, France. Please do check beforehand with your local authorities on any additional costs, custom duties or taxes that you might incur when importing this item out of the EU.
Recent comparable Quad 405 listings have a median asking price of US$398, with the middle range running from US$320 to US$483. At US$470, this sits near the top of that range but remains within normal used-market territory—fair, though not a bargain. The price makes most sense if the unit is clean, working properly, and includes a sound power cable.
The Quad 405 remains a well-regarded classic: its current-dumping design delivers a smooth, muscular presentation and plenty of drive for many conventional loudspeakers. It is especially appealing to listeners who value musicality over ultimate sparkle or modern convenience. Before buying, confirm quiet operation, healthy channels, and that the protection circuitry behaves correctly; these are older amplifiers, and servicing can affect the value. A recently serviced example would make US$470 considerably easier to justify.
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.
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