Kilpatrick Audio - Sextuple Quadraphonic Spatial Director
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ALLEN & HEATH - Mod1 Early 1970's This is the custom quadraphonic mixer made for Pink Floyd.The Mod 1 was used to mix their live gigs by Alan Parsons. It can be
Shakmat Modular Aeolus Quadraphonic Unity Mixer | MUSIC STORE professional
Custom quadraphonic audio mixer
Doepfer A-135-2 Mini Quad VCA/Mixer (8HP) | Gear4music