Sansui is a brand specializing in audio and video products.

Sansui

The Sansui 1000A is a vintage valve receiver that captures the charm and craftsmanship of the late 1960s audio equipment. It features both AM and FM radio sections, with sensitivity for various broadcasting needs. This receiver utilizes a unique combination of tubes, traditionally designed to use 7591A valves, but instances exist where operators have substituted them with 6L6 valves resulting in modifications to accommodate the different pinouts and characteristics. A robust output stage includes output transformers that enable compatibility with both 4 and 8-ohm speakers. It employs a classic full-wave voltage doubler power supply configuration generating up to 520V DC. An adjustable bias circuit is available for the output tubes, allowing individual settings for each tube to optimize performance. The design features complex tone control circuitry, including dual triodes and a presence switch, enhancing sound customization. Notably, the design includes negative feedback mechanisms to tauten frequency response. With a vintage aesthetic, the unit originally lacked a top cover, but enthusiasts often create custom solutions to both preserve its internal components and present the glowing tubes aesthetically. The Sansui 1000A remains a viable option for integrating into modern sound systems, delivering a warm, rich audio experience that appeals to both vintage collectors and casual listeners alike.

1000 A

by Sansui

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