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At US$160, this Onkyo M-501 is a strong deal, landing well below the 25th percentile of US$175 and significantly under the median of US$199 from recent comparable listings. When new, this 150W-per-channel stereo amplifier likely cost several hundred dollars, making today’s asking price an exceptional entry point for a unit that delivers robust power and clean performance.
The M-501 is well-regarded for its low distortion (0.09%), wide frequency response (5Hz–100kHz), and solid damping factor of 60, making it a reliable driver for most speakers. Its 10.5kg build suggests quality components and durability, and listings often include the original box—adding to its appeal. At this price, even with unknown condition, it’s a buying opportunity for enthusiasts seeking a no-nonsense, high-power amp without the premium markup.
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.
