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Our Thoughts RADAR AI

This is a strong deal. At US$570, it sits well below the US$852 25th percentile and far under the US$1,135 median for recent comparable listings, so it’s priced like a bargain rather than a routine used ask.

The SRM-007t is a respected Stax tube energizer: smooth, spacious, and very capable with Lambda and other electrostatic Stax headphones, with enough warmth to keep the presentation musical without losing detail. At this price, a clean, working unit is the kind of purchase that makes sense fast; just confirm it powers up properly, both channels are healthy, and the tubes are in decent shape, since service history and tube wear matter more than cosmetic fuss here.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Stax

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.

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