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Genalex Gold Lion KT77 (EL34) Cryo'd Matched Quad Valves/Tubes Up for sale is a matched quad of Gold Lion KT77 (EL34 replacement) which is purchased from Upscale Audio in the USA while visiting and carefully hand carried these back to Oz. They are pretested and are the cryo'd versions which per the website retails for US$92.95 each (A$140 x 4 = $560). They've done 50 - 70 hours and don't think they are even properly borken in and already sound amazing. I've been saving these up but thinking that I am not going to use my valve amps that much. Sale price of $400 is like 30% discount on thes
Is A$400 a bargain for a used Quad KT77, or is it a fair price for an unknown-condition unit? The asking price of A$400 sits right at the typical median for used Quad KT77 integrated amplifiers in Australia, making it a fair deal rather than a bargain, especially since the condition is unverified. While new matched Genalex Gold Lion KT77 tube quads alone cost roughly A$370–A$400, this listing includes the entire amplifier, so the price is reasonable if the unit works cleanly.
The Quad KT77 is a well-loved 1970s integrated known for its warm, musical sound and robust EL34/KT74 output stage, offering genuine hi-fi value at this price point. If the amplifier is functional and unmodified, A$400 is a solid entry into vintage British hi-fi without the risk of overpaying. Only push back if testing reveals capacitor leaks, channel imbalance, or missing remote/cradle, as those issues would tilt this from fair to risky at this price.
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.
