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Sansui AU-9500 vintage integrated amplifier for sale. This is in excellent condition and has been fully restored. Sounds absolutely amazing with the classic Sansui sonic character; powerful, rich, musical tube-like sound. Extensive restoration includes; power supply and amp boards completely rebuilt with nearly every transistor replaced, all capacitors and all solder connections reworked, all bias pots replaced, all switches and pots cleaned, all connectors scrubbed and cleaned, all diodes replaced, power indicator lamp replaced with new LED, amplifier bias set to factory specs, power cord cleaned and prongs cleaned and polished, tested and confirmed for a return to its former glory! The AU-9500 was the last integrated amplifier overseen by Sansui's founder, Kosaku Kikuchi, before his retirement, often regarded as his personal masterpiece. This was his swan song creation. Key Features & Technical Specifications: - Power Output: 75W+75W RMS (20-20,000Hz) - Circuitry: All-stage, direct-coupled OCL, parallel push-pull - Tone Control: Triple Tone Control (TTC) for flexible adjustment of bass, middle, and treble - Filter System: 12dB/oct active filter circuit - Inputs: Versatile inputs including two phono (MM), microphone, and multiple line inputs - Design: Heavy, durable construction with a classic black faceplate - Frequency response: 15Hz to 40kHz - Total harmonic distortion: 0.1% - Damping factor: 50 - Input sensitivity: 2.5mV (mic), 2.5mV (MM), 100mV (DIN), 100mV (line) - Signal to noise ratio: 65dB (mic), 75dB (MM), 85dB (line) - Output: 100mV (line), 30mV (DIN), 0.8V (Pre out) - Speaker load impedance: 4Ω to 16Ω - Dimensions: 140 x 500 x 347mm - Weight: 23.3kg (51.4lb) Available for demo if needed. I have recently swapped this out for a separate preamp and amp, otherwise I would keep this beast.
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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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