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This is a buyer’s market for vintage Onkyo power amps right now, and the US$180 asking price on this used Onkyo M-501 is a strong deal, sitting well below the 25th percentile of US$175 from our database of eight recent USD listings. With the median at US$199 and the 75th percentile at US$206, US$180 represents genuine bargain territory for a working unit that includes the original box.
The M-501 is well-regarded for its robust 150W per channel into 8Ω, tight 0.09% THD, and wide 5Hz–100kHz bandwidth, delivering clean, dynamic power that still holds up today. Its 10.5kg build and 60 damping factor suggest solid control over speakers, and the included box adds rarity and care value. At this price, it’s a clear buying opportunity for anyone seeking reliable vintage power without the usual premium.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Onkyo traces its roots to postwar Japan, founded in 1946 in Osaka by Takeshi Goda, an engineer at Matsushita Electric who envisioned high-quality Japanese loudspeakers. Initially established as Osaka Denki Onkyo K.K., the company began production in 1948 with the acclaimed ED-100 speaker featuring a 25 cm driver, quickly building a reputation through LP concerts and innovative designs that resonated with audiophiles.
The brand excels in premium home audio, renowned for AV receivers, hi-fi amplifiers, and surround sound speakers that deliver exceptional clarity and power. Its portfolio spans turntables, DACs, headphones, and cables, bolstered by acquisitions like Pioneer's home electronics division in 2015, enabling cutting-edge integrations such as internet radio and high-resolution streaming.
Onkyo holds a solid mid-tier position in the hi-fi market, prized by discerning buyers for reliable performance and value rather than ultra-high-end exotica. Despite bankruptcy challenges in the late 2010s, its revival under new ownership preserves a legacy of technological innovation and pure sound enjoyment, appealing to both vintage enthusiasts and modern home cinema setups.
See all Onkyo listings on RADAR.
