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The Stax SRA-12S is a respected vintage Japanese headphone amplifier known for its clean, low-noise drive that pairs well with dynamic and early electrostatic designs. At US$320, this listing is a strong bargain, sitting well below the 25th percentile of US$362 from our database of four recent comparable USD listings, and far under the median of US$643. This price is even lower than the US$350–US$450 range often seen for AS-IS or stock units in other markets, making it an exceptional entry point if the unit functions.
This amplifier delivers the tight, uncolored sound that Stax enthusiasts value, with enough headroom for most dynamic headphones and a warm, musical character. Given the deep discount, the primary upside is the chance to secure a well-regarded vintage piece at a price that leaves room for minor servicing or restoration if needed. Unless the listing explicitly notes major faults or missing critical parts, this is a clear buying opportunity for anyone seeking reliable vintage Stax performance without paying median or premium prices.
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.
