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Is A$1,883 a fair price for a used Stax SRM-400S, or are you paying too much for nostalgia? Based on our database of 52 comparable AUD listings, the median asking price is A$1,268, placing this A$1,883 offer above the typical market but comfortably below the 75th percentile of A$2,152. This isn’t a bargain, but it’s a reasonable premium for a unit that likely includes original accessories or boasts pristine, original-owner condition; if the listing is clean and complete, the price is fair for a well-regarded driver.
The SRM-400S earns its reputation as a smart compromise between the older SRM-353X and the flagship SRM-700S, delivering 60dB gain with less than 0.01% harmonic distortion and a clean 400V output. It handles pro-bias electrostatic headphones with authority, inheriting key tech from the 700S while staying accessible. At A$1,883, you’re buying a solid, proven energizer that bridges generations—worth it if the condition is excellent and no major accessories are missing.
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.
