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SANSUI AU-a907i MOS LIMITED:A fantastic Japanese high-fidelity amplifierDescriptionThe Sansui AU-α907i MOS Limited, released in Japan in 1987 during the “Golden Era” of high-fidelity Japanese audio equipment, is a gorgeous vintage amplifier of exceptional quality. The AU-α907i MOS Limited was made to celebrate the 40th anniversary of the company and offers a power rating of 80W + 80W (8 Ohms) with total harmonic distortion (THD) of <0.01%. Clocking in at 31 kg (68 lb), this thing is built like a tank, but to a high degree The amp circuits is of the highest quality, with Sansui's highly advanced α-X circuit, where amplification of the positive and negative components of the signal are carried out by independent amplifiers, which further reduces noise and distortion. In this model, a carefully designed and matched MOS FET circuit is featured in the power stage,Working in concert with the α-X circuit to provide fantastic drive characteristics. The power amplifier offers balanced input for balanced transmission and amplification with high signal purity. Everything about this amp spells quality, with its precise, thoughtful construction and beautiful, luxurious appearance.This amplifier is in very good condition, with some general signs of use, including some scratches, scuffs and spots (please see photos).**There is peeling on the side panel. This amplifier has been thoroughly checked and tested by our professional technician, who has confirmed its integrity and working condition. These “Golden Era” amps are known for their robust construction and use of the highest quality parts, so it's likely this unit will see many more years of use.Additional InformationTechnical Specifications-Serial : 618028512-Country of Manufacture : Japan-Power Supply :AC100V 50/60Hz 260WAccessories-N/AVoltagePlease check the power requirements for this device and the specifications of your power supply. If you need to use this item in a 220-240 V environment, you'll need a transformer. We sell high quality Japanese compact transformers (Nissyo), which will allow you to use this item safely and with good performance in your country.IMPORT TAX・Import duties, taxes, and other charges which are not included in the item price or shipping charges are the buyer’s responsibility.・Please check with your country’s customs office to determine what these additional costs will be prior to bidding or buying.・Except in the case of faulty or damaged items, refunds do not include any return shipping or shipping charges. Your return shipping charge will be deducted from your refund if you receive any.
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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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