RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Hi AllGraham Slee Solo headphone amplifier in its TOTL version, the Ultra Linear Diamond Edition. Still a fine amp for those only needing a 6.3mm socket. Incredibly quiet with a beautifully silky top end. RRP is $1250. Also included is a Nordost Purple Flare power cable to connect the PSU1 linear...
The timing matters a bit here because this is a mature, established design rather than a fast-moving current-gen product, so value is mostly about condition and provenance. At A$800, it sits above the A$797 75th percentile of the recent comparable AUD listings, so this reads as slightly ambitious rather than a bargain.
That said, for a well-regarded Graham Slee headphone amp, the appeal is the clean, refined solid-state presentation and the fact that these are typically bought for long-term use rather than fashion turnover. An excellent-condition unit is the right kind of listing to pay up a little for if it’s complete and has been looked after; the upside is getting a proven, no-drama amp from a respected line without the uncertainty of cheaper, rougher examples.
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.
See all Graham Slee listings on RADAR.
