RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Onkyo Integra P-309 High-End Vintage PreamplifierExcellent audiophile preamplifier from the golden era of Japanese audio (1983). Features premium build quality, Super Servo technology, and an exceptional phono stage (MM/MC). Delivers pure, detailed, and high-fidelity sound. Ideal for collectors and vintage audio enthusiasts.SpecificationsFrequency response: 0.8Hz to 170kHzTotal harmonic distortion: 0.002%Input sensitivity: 0.13mV (MC), 2.5mV (MM), 150mV (line)Signal to noise ratio: 76dB (MC), 82dB (MM), 90dB (line)Output: 150mV (line), 1.5V (Pre out), 13V (Pre out Max)Semiconductors: 71 x transistors, 52 x diodes, 10 x FET, 8 x ICDimensions: 480 x 127 x 415mmWeight: 10.5kgLocal pick up / inspection / purchase available at Archer High Fidelity in Falls Church, VA. We are a vintage sales and service specialist covering the Washington DC metro area.All major credit cards accepted, as well as PayPal, check on clearing, and Venmo.Any other questions, please feel free to ask.
Onkyo’s Integra P-309 sits in that sweet spot of serious 1980s Japanese preamp engineering: well-built, respected, and still attractive to buyers who want a clean, full-featured control center. At US$350, this asking price looks fair to slightly strong rather than a steal, since the model’s recent used asking/realized prices cluster roughly in the low-US$300s and can run higher for clean, complete examples.
What makes it worthwhile is the combination of reputation and usability: the P-309 is a proper audiophile preamp from Onkyo’s better era, with enough refinement to partner a good power amp without sounding sterile or thin. If the unit is truly clean, original, and fully functional, US$350 is easy to justify; just verify switches, pots, selector logic, and any included remote or manual, because age-related service needs matter more than cosmetic wear here.
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.
