Quadraphonic tape recorders - audiosite

Surround Sound - audiosite

Quadraphonic reel-to-reel audio tapes ~ MegaMinistore

Amp/Preamp Asylum

Akai CR 80D SS Quadraphonic 8 track recording deck Akai, Vintage electronics, Cassette tape recorder

Quadraphonic reel-to-reel audio tapes ~ MegaMinistore

Quad 8-track tape Q8s

Tiptop Audio Buchla Dual Oscillator Module 258t

GoodSoundClub - Romy the Cat's Audio Site - Mopidy

CONCORD Stereophonic 550 Tape Recorder Owned by Queens of the Stone Age #28023

Capitol - Quad Demonstration Tape - Quadraphonic 8-track tape, 4.0 Surround

GoodSoundClub - Romy the Cat's Audio Site - Poorly focused response