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This is an ambitious ask, at £1,200 GBP: it sits well above the £591 GBP 75th-percentile asking price in 99 recent comparable listings, and is over six times the £186 GBP median. It could still be defensible for an exceptionally original, cosmetically strong, professionally documented example, but “serviced and working” alone does not make it a bargain at this level.
The Stereo 20 remains a superbly regarded compact valve amplifier, combining clean, open, transparent sound with highly desirable EL84 output stages; the matching preamp completes a historically important and musically engaging pairing. The service history is the key: look for itemised work, healthy transformers, quiet operation, good valves, and confirmation that the preamp’s controls and phono stage function properly. Original cosmetics and Mullard valves add meaningful appeal, but at £1,200 GBP, evidence and condition should be outstanding.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in 1934 by Harold Joseph Leak in London, England, LEAK emerged as a pioneering force in British hi-fi, initially crafting public address systems and cinema amplifiers before pivoting to high-fidelity home audio amid post-war innovation. With engineer Ted Ashley's contributions, the brand rode the 1950s hi-fi boom, producing landmark valve amplifiers like the TL/12 series, which set benchmarks for low distortion and performance, establishing LEAK as a global leader in affordable excellence.
LEAK specialized in integrated amplifiers, such as the iconic Stereo 20, Stereo 30, and Stereo 50, alongside innovative loudspeakers featuring the patented "Sandwich" foam-core drivers for precise bass and clarity. The lineup extended to radio tuners, pickups, tonearms, and turntables, blending valve warmth with emerging transistor tech to dominate the stereo era.
Acquired by the Rank Organisation in 1969 and dormant by the late 1970s amid Japanese competition, LEAK's revival under the IAG Group since 2020 honors its heritage with modern classics like the Stereo 130 and 230 integrated amplifiers, plus CD transports and streamers. Revered by vintage collectors for cult models like the Stereo 30, it holds mid-tier prestige today—delivering high-end British sound at accessible prices for discerning buyers seeking timeless refinement.
See all LEAK Stereo listings on RADAR.
