Q4: Sansui QD-5500 Reel-to-Reel QuadraphonicQuad Home Audio Forum

Beautiful top of the line vintage Sansui QD-5500 Auto Reverse Reel To Reel 2/4 Channel tape deck, real wood cabinet, everything working as it should,

Sansui QD-5500 Reel To Reel 2/4 Channel Auto Reverse, Wood Panels, Ex Sound, Working, Beauty, 120/22

RCVR: Sansui QR-4500 Quadraphonic Receiver

Sansui QRX-5500 Four Channel Receiver Manual

Quadro King's Gear Photos, Page 3

Quadraphonic Discography Popular Recordings - Complete List

Quadro King's Gear Photos, Page 3

Sansui QD-5500 Issues

Fell down a Quadraphonic rabbit hole a few years ago, and this is where the setup is at now : r/vintageaudio

Decoder: Akai Universal Synthesizer