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£125 is a little below the £142 median and just above the £124 25th percentile, so it reads as fair-to-good value rather than a steal. It is nowhere near the £270 75th percentile, so I’d view it as sensibly priced for a clean working example.
That makes sense for a well-regarded portable Graham Slee piece: compact, genuinely hi-fi in intent, and the sort of amp people buy for a transparent, no-drama step up from mediocre headphone outs. “Tested & Working” is the right reassurance at this level; if it includes the proper power supply and is physically tidy, it becomes an easy pick for someone wanting a dependable portable amp without overpaying.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Graham Slee Projects, founded in 1998 in the UK by engineer Graham Slee, traces its roots to his extensive career beginning in 1974. Starting in audiovisual engineering, he advanced through printed circuit design, electronics manufacturing, and broadcast audio, serving as a senior engineer for BBC studio contractors before freelancing in hi-fi. This deep expertise laid the foundation for a brand dedicated to precision audio electronics, all handmade in British workshops.
The company specializes in phono preamplifiers and headphone amplifiers, developed in tandem since 2000 to mutually enhance performance. Flagship phono stages like the Accession MM, Reflex M, Era Gold V, and Revelation excel at extracting superior detail from vinyl, while headphone amps such as the Solo Ultra Linear and Novo deliver refined, high-fidelity drive. Graham Slee also offers DACs, focusing on compact, synergistic components for vinyl enthusiasts and headphone users rather than speakers, turntables, or cables.
Positioned as a niche boutique in the high-end hi-fi market, Graham Slee earns acclaim among discerning audiophiles for its uncompromised sound quality and value. Free from mass production, its products prioritize musical transparency and build integrity, appealing to serious vinyl collectors and headphone aficionados who seek understated excellence over hype.
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