Sansui AU-10000 Integrated Amplifier Parallel PP Overhauled

CONDITION

This unit is in excellent condition and works properly, and has been fully overhauled. The power transistors are original. In the overhaul, 27 small-signal transistors, 26 resistors, and 53 electrolytic capacitors were replaced, and the idling current and DC offset were adjusted. The front panel has been glass-coated.

ABOUT THIS ITEM

The Sansui AU-10000 is a high-grade integrated amplifier made in Japan by Sansui, one of the most respected names in vintage audio, released in 1977 as a top-class model from the golden era of Japanese hi-fi. It delivers 110 watts per channel into 8 ohms with very low total harmonic distortion of just 0.03% and an excellent signal-to-noise ratio of over 115 dB. The power amplifier section uses a parallel push-pull output stage, a differential input stage with a current mirror, and a 3-stage Darlington connection for powerful, low-distortion output. It is built on Sansui's distinctive block-structured chassis layout, which separates each stage to reduce mutual interference, and features a high-precision 7-element equalizer with dual-transistor input, Sansui's unique triple tone control (adding a midrange control), low and high filters, and a tone-defeat switch. A strong power supply using an efficient low-flux-leakage toroidal transformer with large capacitors delivers stable power to each block. Robustly built and beautifully engineered, the AU-10000 remains a refined and highly sought-after vintage integrated amplifier.

・Power Supply Voltage: AC 100V, 50/60 Hz (Japanese domestic model). Please use a suitable step-down transformer in 110–240V regions.

— Grape Japan