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This is a buyer’s market for this piece at US$110: against a recent comp set with a US$215 median and US$162 25th percentile, it lands well below the low end and looks like a strong deal rather than a merely fair one. Even compared with the US$234 75th percentile, the ask has plenty of room.
That makes it worth a close look, especially if you want a solid older DAC/receiver-era component without paying up for collector-grade examples. Proton gear has a good reputation among enthusiasts for clean, musical sound and sensible engineering, so the upside here is getting a respected unit at a price that leaves budget for service or setup. Since condition is listed as unknown, the main buyer task is to verify basic function, controls, and any missing accessories before jumping.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Proton Electronic Industrial Co., Ltd. emerged from Taiwan in 1981, establishing its base in Banciao, Taipei-Hsien, as a manufacturer targeting the U.S. consumer audio market with high-quality components. Linked to Fulet Electrical, which produced notable NAD amplifiers, the brand launched around 1984 to expand into consumer electronics, including acclaimed TV monitors like the 600M and 602M models. By 2009, it remained active, building on a heritage of precision engineering from shared facilities with brands like NAD and Dynaco.
The company focused on premium hi-fi gear optimized for real-world performance, emphasizing tuners, receivers, amplifiers, and integrated systems that drove everyday loudspeakers with exceptional clarity. While not delving into headphones or cables, Proton's lineup prioritized robust playback under practical listening conditions, from radio reception to vinyl and cassette sources, earning praise for its engineering rigor in the 1980s.
Proton holds a solid reputation in vintage hi-fi circles as a mid-tier powerhouse, favored by collectors for its reliable, high-value sound that punched above its price point. Positioned as an accessible alternative to elite brands, it appeals to discerning buyers seeking durable, no-nonsense performers rather than boutique exotica, with ongoing interest in its schematics and restored units.
See all Proton listings on RADAR.
