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Unknown condition makes the price harder to judge, but at £312 this is a genuine bargain against the supplied market: it sits well below the £412 25th-percentile figure, with comparable listings centred on £450 and reaching £472. Even allowing for a little risk from the sparse description, the asking price leaves meaningful room for a sensible buyer.
The SRM-D10 is a particularly useful Stax component: a compact, battery-powered PRO-bias energiser with built-in USB DAC and analogue input, capable of driving Stax earspeakers without a separate desktop setup. It is a strong fit for portable or space-conscious electrostatic listening, and its high-resolution DAC adds practical versatility. Before committing, verify that it powers on, charges normally, produces clean output, and includes the charger; battery health is the main condition-specific point worth checking.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Stax traces its origins to 1938 in Tokyo, Japan, when Naotake Hayashi founded Showa Kouon Co., Ltd. in Chiyoda-ku. Initially focused on wax disc recording, metal master production, and audio equipment for film soundtracks, the company evolved through the postwar era. In 1950, it launched its first high-frequency condenser microphone, adopted by NHK, and renamed itself STAX Co., Ltd. in 1963, honoring its pioneering Stax-1 mic. A brief suspension in 1995 due to economic pressures gave way to revival, preserving its legacy under family leadership.
The brand specializes in electrostatic headphones, known as "EARSPEAKERS," debuting with the world-first SR-1 in 1960. This innovation spawned enduring lines like the SR series, produced for decades with incremental refinements for superior resolution and staging. Stax complements these with dedicated electrostatic amplifiers and select accessories, eschewing conventional speakers, turntables, DACs, or cables to hone its transducer expertise.
Stax commands a niche high-end position among audiophiles and professionals, revered for unmatched transparency and fidelity that rivals cost-no-object loudspeakers. Its 85-year heritage cements it as a boutique icon in electrostatic technology, far from mass-market fare, appealing to discerning buyers seeking pinnacle sonic transduction.
See all Stax listings on RADAR.
