History's Dumpster: The History of Stereo and Quadraphonic Sound
Learn about vintage quadraphonic record collecting: Also few tips on buying vintage quad equipment
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Rare JVC 4-Channel CD-4 Quadraphonic Turntable 4VC-5244 For Parts Or Repair | eBay
Learn about vintage quadraphonic record collecting: Also few tips on buying vintage quad equipment
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Anyone have any information about this Panasonic Model 500 CD4 with quadraphonic audio? : r/turntable
Rare JVC 4-Channel CD-4 Quadraphonic Turntable 4VC-5244 For Parts Or Repair | eBay
Quadraphonic Discography "Popular Asian Market Recordings - Complete List"
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Studio 2040 SQ Quadraphonic System -- Grundig Sound and Vision 1974/1975
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Sansui FR-3080 Automatic 2/4 Channel Turntable, 1975, Walnut Veneer, Quad Cartridge, Rare, Stellar! | Reverb
Multisonics - If you are in the mood for something grand... | Facebook
EXPLAINED: Quadraphonic Vinyl Records! - YouTube
CD-4
