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Compared with the obvious alternative of a more modern budget preamp, this sits at the upper edge of the typical used market rather than feeling like a bargain. At US$500, it is above the US$425 median and just over the US$499 75th percentile, so the asking price is a touch ambitious, not outrageous.
That said, the P-304 has the kind of reputation that keeps vintage Onkyo pieces in play: solid build, understated sonics, and enough flexibility to appeal to someone pairing it with a serious power amp. If the unit is clean, fully functional, and preferably includes the original box, manual, or remote if applicable, it can still make sense for a collector or a buyer specifically chasing this era’s sound.
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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