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Specs:Impedance: 25 OhmsSensitivity: 94 dB @ 1mWCondition:I've marked the condition as Good because the pads are a little flaky (TH610 pads are apparently a drop in replacement), and the cable has the inevitable internal twist that these all get. Everything functions well, however, and the cups a...
Is this the kind of easy buy you’ve been waiting for? At A$250, this sits right on the median of the recent comparable AUD listings, so it reads as a fair, market-level ask rather than a steal or an inflated price. With only two comparable listings and the same A$250 at the 25th, 50th, and 75th percentiles, there isn’t much evidence of a wider bargain window here, but it’s still solid value if the condition is genuinely good.
What makes this worthwhile is the TH-X00’s reputation for big, enjoyable bass, lively dynamics, and an easygoing, fun listen that still feels distinctly “audiophile” rather than generic consumer-tuned. Mahogany versions are especially sought after by fans of this line, and clean used examples can be hard to find in consistent condition. If the pads, headband, and cups are well kept and the original cable is included, this is the sort of listing that should attract a serious headphone buyer quickly.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Fostex emerged in 1973 as the branded consumer and professional division of Foster Electric Co., Ltd., a Japanese loudspeaker manufacturer founded in 1949. Established to bring Foster's high-quality speaker components directly to dealers and customers, Fostex quickly gained international recognition through innovative products like the T20RP headphones and 6301 studio monitors. The brand's foundation rests on Foster's position as one of the world's largest OEM loudspeaker developers, employing tens of thousands across multiple countries and manufacturing millions of speaker units monthly.
The company built its reputation across three interconnected product categories: professional studio equipment, consumer headphones, and powered monitor speakers. Fostex became particularly renowned for pioneering RP (Regular Phase) technology, which delivers clear sound with high sensitivity and wide dynamic range—a signature that defines their headphones, microphones, and speaker designs. Beginning in 1978, the brand expanded into professional speaker development, eventually introducing the PM series of powered monitors and establishing itself as a trusted choice for recording studios, broadcast facilities, and serious home listeners.
Fostex occupies a distinctive middle ground in the audio market: neither ultra-premium boutique nor mass-market consumer, but rather a respected specialist brand with deep professional credentials. Their products appeal to recording engineers, studio owners, and discerning hi-fi enthusiasts who prioritize accuracy and reliability over luxury positioning. The 6301B monitor remains an industry standard after decades in production, while the T20RP headphones maintain popularity among studio professionals—testament to Fostex's enduring reputation for sonic integrity and engineering excellence.
See all Fostex listings on RADAR.
