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US$1,230 is ambitiously priced, sitting well above the 75th percentile of US$399 for this model’s used market. Based on 306 recent comparable listings, the median asking price is US$188, making this listing roughly 6.5 times the typical value and not a bargain.
That steep price is hard to justify even though the Onkyo Integra M-504 is a respected vintage powerhouse from 1987–1997, delivering 165WPC with smooth mids and clean highs that enthusiasts still praise. It’s a “Hulk”-class amp known for durability and solid bass, and listings in nice, working condition do pop up occasionally. However, unless this one includes rare accessories, is original-owner pristine, or has documented recent servicing, the US$1,230 asking price feels like a collector’s premium rather than a smart buy for a fellow enthusiast seeking value.
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.
