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US$600 is a fair asking price, sitting just above the US$570 median but below the US$660 75th percentile of recent comparable listings. It is not a bargain on price alone, but it is defensible for a clean, fully tested example.
The P-306RS remains a desirable vintage preamp for its sophisticated MM/MC phono section, quiet line stage, unusually solid construction, and excellent control layout. Its wide-bandwidth, low-distortion design and adjustable cartridge loading make it especially appealing to vinyl-focused systems. Because this listing’s condition is unknown, confirm both channels work quietly, all switches and controls are free of crackle, the phono stage is healthy, and the lamps and original feet are present. At US$600, documented service or genuinely clean condition would make it a worthwhile buy; otherwise, negotiate toward the median.
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.
