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Selling a used and good condition Sansui QS-500 4-Channel Rear Amplifier.
Compared with the obvious alternative of buying a generic vintage quad box at this money, US$250 for a Sansui QS-500 is fair to slightly strong, not a steal. The original first-year price is listed at US$289.95, so this asks about the same neighborhood in nominal terms, but a clean, working example with no issues would still be reasonable at US$250 given how niche these are.
What makes it worth a look is the QS-500’s role as a 4-channel Sansui matrix decoder/synthesizer with modest but respectable 33 watts per channel output, aimed at turning stereo sources into quad playback. That makes it more of a collector’s and system-fun piece than a brute-force receiver, so value is highest if it’s complete, unmodified, and actually functional on all channels; because condition is unknown, I’d want confirmation of full quad operation before treating US$250 as a buy-now price.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sansui, a pioneering Japanese audio brand, traces its origins to 1947 when it was founded in Tokyo by brothers Sakurai and Shunichi Yamamoto. Emerging from post-war Japan, the company quickly established itself as an innovator in consumer electronics, leveraging precision engineering to craft components that rivaled Western counterparts. Its heritage is rooted in the golden era of hi-fi, where Sansui's commitment to sonic purity helped define Japan's rise as a global audio powerhouse.
The brand excelled in a broad spectrum of hi-fi categories, with particular renown for its integrated amplifiers, receivers, and tuners that delivered warm, dynamic sound. Sansui also produced acclaimed speakers, turntables, cassette decks, and later digital converters, emphasizing robust build quality and innovative features like direct-coupled circuitry for low distortion. These products catered to audiophiles seeking balanced performance across analog and early digital domains.
Today, Sansui holds a cherished position in the vintage collector market, revered for its mid-to-high-end gear from the 1970s and 1980s—icons like the AU-series amps remain sought after for their musicality and reliability. While no longer a frontline manufacturer, its legacy endures among discerning buyers restoring classics or hunting timeless performers, blending nostalgia with enduring value.
See all Sansui listings on RADAR.
