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Sansui AU-6900 Integrated Amplifier (Solid State) For sale is a lovely Sansui AU-6900 integrated amplifier. This unit is in great cosmetic and electrical condition. The amplifier has had troublesome differential pair input transistors replaced, fuse resistors replaced, and a service including cleaning of switches and setting of bias and DC offset. She sings sweetly indeed with that lovely character and tone for which Sansui is renowned. The top cover has been resprayed and presents nicely. A few minor marks on the top edge and sides of the front fascia but the fascia and knobs themsel
At A$950, this Sansui AU-6900 is ambitiously priced compared to the typical used market, which generally ranges from A$450 to A$900 depending on restoration status. The asking price sits well above the median and exceeds the 75th percentile for this 1975–1977 integrated amplifier, making it a tough buy unless it’s in exceptional, original-owner condition with full accessories.
The AU-6900 is a respected member of Sansui’s legendary “Definition Series,” delivering 60W per channel with low distortion (0.1%) and a wide frequency response (5Hz–40kHz). It’s well-regarded for its triple tone control, dual tape deck support, and robust OCL output stage. If this listing includes the original manual, remote (if applicable), and shows no signs of capacitor aging or channel imbalance, the sonic performance could justify the price—but only for a buyer who values vintage Japanese hi-fi integrity over budget.
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.
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