Offered here is a superb Sansui AU-5900 vintage integrated stereo amplifier, presented in excellent condition and recently updated, serviced, and fully tested. A highly regarded Japanese amplifier from Sansui’s classic 1970s era, the AU-5900 combines a warm, powerful musical presentation with an excellent phono stage and comprehensive system connectivity. She presents beautifully, Sansui black satin and chrome face , the most sought after era of the brand in both looks and performance. The unit has been carefully inspected, cleaned, serviced, and adjusted for reliable operation. Its controls and inputs have been checked and cleaned and the amplifier delivers clear, detailed, dynamic sound from both channels. It is an ideal choice for a serious vinyl-based system or a classic vintage hi-fi setup. Features 45 watts per channel into 8 ohms. High-quality MM phono stage for turntables. Phono, tuner, auxiliary, and dual tape connections. Two selectable speaker outputs. Pre-out and main-in connections. Bass, midrange, and treble controls with tone defeat. High- and low-frequency filters. Loudness control, balance control, and stereo/mono selection. Headphone output. Classic robust Sansui construction and styling. Technical specifications Model: Sansui AU-5900. Type: Stereo integrated amplifier. Power output: 45 watts per channel into 8 ohms; some factory specifications quote 50 watts per channel at 1 kHz. Frequency response: Approximately 5 Hz–40 kHz. Total harmonic distortion: 0.1%. Damping factor: 80. Signal-to-noise ratio: Approximately 90 dB, line level. Channel separation: Approximately 50 dB, MM phono. Phono input sensitivity: Approximately 2.5 mV. Line input sensitivity: Approximately 130 mV. Dimensions: 430 × 132 × 312 mm. Weight: Approximately 11.5 kg. Era: Circa 1976. The AU-5900 is a substantial, beautifully built vintage amplifier with plenty of power for a wide range of loudspeakers. This excellent, recently serviced example is ready to enjoy and would make a fine addition to any vintage hi-fi collection. Specifications are based on published AU-5900 technical data, with some figures varying slightly between factory and reference sources. Please take note of the detailed photographs provided as they form part of the description and therefore part of the sale Also note that we don't guarante vintage electronic items, due to age and the nature of the hobby all vintage electronics should be checked and serviced regularly by a qualified electronic technician. It will protect your investment in the long run. We will use our custom packaging system to ship the item but please know we pack for the safety of the item not for economy.