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*US* BUYERS IGNORE MESSAGE ABOVE SAYING THERE IS TARIFFS FOR THE BUYER THAT IS NOT TRUE! I PREPAY ALL US BUYER TARIFFS NO TARIFFS FOR YOU TO PAY, YOU PAY IS ONLY AT CHECKOUT NO HIDDEN FEES* Specifications:Tuning range: FM, MWPower output: 85 watts per channel into 8Ω (stereo)Frequency response: 10Hz to 55kHzTotal harmonic distortion: 0.02%Damping factor: 40Input sensitivity: 2.5mV (MM), 150mV (line)Signal to noise ratio: 73dB (MM), 96dB (line)Output: 150mV (line)Semiconductors: 1 x FET, 7 x IC, 35 x transistors, 34 x diodes, 2 x LEDDimensions: 550 x 164 x 485mmWeight: 19kgUncover the nostalgia of high-fidelity audio with the Optonica SA-5151, a vintage AM/FM stereo receiver that has been thoroughly serviced to ensure top-notch performance. Built with precision in Japan, this piece of audio history from Sharp boasts a robust 85WPC power output, delivering crisp and powerful sound that is sure to impress even the most discerning listener.Whether you're looking to complete your collection of vintage electronics or seeking the authentic audio experience of yesteryear, the SA-5151 is a testament to classic design and enduring quality. With its timeless aesthetic and reliable construction, this stereo receiver is not just a sound system but a slice of musical heritage that resonates with the past while offering the warmth of analog audio today.
The Optonica SA-5151 is a genuinely notable vintage receiver: Sharp’s top model in the original series, rated at 85 watts per channel. At USD 806, though, this is ambitious rather than a bargain. Comparable examples and broader Optonica listings tend to cluster around roughly USD 180–400, with even stronger asking prices needing exceptional condition, documentation, or provenance.
Its appeal is real: substantial power, handsome late-1970s construction, and the rarity and collectability of Sharp’s higher-end Optonica line. A fully serviced, exceptionally clean example with original manual, schematics, and tested controls could justify a premium, but USD 806 still requires near-mint presentation and convincing mechanical and electrical restoration. Without that evidence, this is a pass or negotiation target, not a straightforward buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# Optonica
Optonica was a high-end audio subdivision of Sharp Corporation, the Japanese electronics manufacturer. Launched in 1975 (with some sources citing 1976), the brand was created to compete directly with established premium audio makers including Pioneer, Yamaha, Sansui, Nakamichi, and Marantz during the golden age of hi-fi. Sharp designed, built, and marketed Optonica products entirely in Japan, positioning the line as a serious contender in the luxury stereo market.
The brand's product portfolio centered on integrated amplifiers, receivers, and complete stereo systems aimed at discerning audiophiles. Optonica equipment was engineered to deliver high-fidelity sound reproduction across the mid-to-high power range, with models typically rated between 40 and 60 watts per channel. The brand maintained a focused approach, concentrating on core audio components rather than diversifying across numerous product categories.
Optonica's tenure in the high-end audio market proved relatively brief, effectively ending by 1982 as a serious competitor. The brand was revived in 1988 as a consumer electronics line encompassing stereo television receivers, VCRs, portable cassette players, and surround-sound receivers, but this iteration lacked the prestige of the original audio division. Production ceased entirely by 1991. Today, Optonica equipment from the late 1970s and early 1980s holds appeal among vintage audio collectors and enthusiasts seeking well-engineered Japanese hi-fi from that era.
See all Optonica listings on RADAR.
