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Onkyo M-5000R Stereo Power Amplifier The Onkyo M-5000R is a high-fidelity stereo power amplifier designed as part of Onkyo's "Reference Series". It uses a Class A/B design to deliver clean, stable power even into demanding speaker loads. Tested and workingVery little cosmetic wear - one small scuff at lower right just above the model number (see last photo).Original box, with packaging. No manual. No remote.In the Milwaukee Area? Stop in our shop to inspect/demoBuy with confidence: See our feedback and thank you for considering. All the gear we sell is packaged with great care for safe arrival in the condition advertised and backed up by our 14 day full refund policy in the event you are not happy for any reason.
At USD1,500, this Onkyo M-5000R power amp is ambitiously priced compared to the USD149–999 range from 37 recent comparable used listings (median USD303), where you'd snag something like a solid Pass Labs XA30.5 for similar money with proven grunt and resale legs. It's no bargain unless pristine and low hours, but overreaches the market norm for this Reference model.
Before biting, verify both channels drive clean with no hum, buzz, or distortion—amps this age often suffer output stage failures from heat stress—and demand service history or original boxes/manual to gauge capacitor life. Test inputs/outputs thoroughly; skip if rust lurks on the chassis.
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.
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