Sansui is a brand specializing in audio and video products.

Sansui

The Sansui QS-500 is a quadraphonic stereo decoder released in the mid-1970s. This unit was designed to provide an immersive sound experience by decoding quadraphonic audio signals into a format that can be played through standard stereo systems. It features a range of controls for adjusting balance, volume, and tone settings, allowing users to customize their listening experience. The QS-500 is equipped with various inputs, including RCA connections for easy integration with other audio components. One notable feature is its ability to decode SQ (Matrix) and QS (Quadrasonic) formats, making it versatile for different types of quadraphonic recordings. The unit typically includes an FM multiplex output and supports stereo and quadraphonic formats. The design features a classic brushed aluminum front panel, and it is compact enough to fit easily into a home audio setup. For many enthusiasts, the QS-500 embodies a piece of audio history, appealing to those who appreciate the quadraphonic format and its unique sound characteristics.

QS-500

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