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Against the US$526 median of recent comps, this at US$553 is a touch above the middle but still well inside the market’s normal spread, and comfortably below the US$852 75th percentile. I’d call it fair-to-slightly-ambitious, not overpriced, especially if the unit is clean and fully functional.
The P-306RS is a well-regarded vintage preamp because it gives you the core Onkyo virtues: solid, no-nonsense build, quiet line-stage performance, and a straightforward, musical presentation that still makes sense in a serious analog or classic CD setup. If the knobs, switches, and jacks are all healthy and it’s been cared for, this is the kind of piece that rewards a buyer looking for an honest, stable front end rather than a collectible headache.
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.
