Sansui is a brand specializing in audio and video products.

Sansui

The Sansui QS-1 is a stereo decoder that was produced in the 1970s, designed to enhance the listening experience by providing a wider soundstage through quadraphonic audio processing. It operates by decoding four channels of audio to create a multi-dimensional sound environment that is especially suited for compatible recordings. The unit often receives praise for its build quality and ease of use, featuring an array of input and output options to connect with various audio sources. The QS-1 includes a tuning circuit for adjusting the decoding process and optimizing sound for the environment. Furthermore, it may allow for the blending of stereo and quad recordings, providing versatility in playback. Specifications typically include a frequency response of 20 Hz to 20 kHz, signal-to-noise ratios around 70 dB, and various output levels that can be adjusted to match different amplifiers and speakers. Its compact design makes it suitable for home audio setups with limited space.

QS-1

by Sansui

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