Up for sale is a legendary piece of audio history – the Sansui QS-1 Quadraphonic 4-Channel Synthesizer Decoder. Released in the early 1970s, this ingenious instrument uses Sansui's patented QS Regular Matrix system to magically transform standard 2-channel stereo signals into a rich, immersive 4-channel quadraphonic soundstage.It is the perfect addition for vintage audio enthusiasts, collectors, or anyone looking to expand their classic hi-fi setup into the world of quadraphonic sound.Technical Condition:

• Overall status: Fully operational
• Testing: All channels, knobs, and switches work smoothly without any scratchy noise.
• VU Meters: Backlights and meters are fully functional and responsive.
• Voltage: 100V

Visual Condition:

• Front Panel: Clean brushed aluminum faceplate with original knobs in great condition. Brand new sticker left on front panel
• Cabinet: Excellent wooden case with nosigns of wear
• Overall: Well-preserved vintage piece that looks stunning on any audio rack.

Key Specifications:

• Type: 4-channel quadraphonic synthesizer/decoder.
• Decoding System: Patented Sansui QS Matrix.
• Functions: Converts any stereo source (vinyl, tape, CD) into a 4-channel matrix output.
• Controls: Level balance, functions switch, and beautiful analog VU meters.
• Era: Early 1970s (Made in Japan).

Shipping & Packaging:

• Will be securely packed with double boxing and plenty of bubble wrap to ensure safe transit.
• Shipping within Europe with a tracking number.
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Feel free to message me if you have any questions or need more photos!