Polyfusion QP-1 Sound-A-Round Quad Panner.
Extremely rare. there were only a couple of hundred ever made. It is the Holy Grail for Polyfusion modular synth owners
There is an auto and manual mode.
It features a joystick for real time manual control.
This allows you to
move the sound from any quadrant to any other quadrant forward,
reverse, up down, etc.
Automatic mode uses a built in LFO to automate panning,
It can also be used to redirect CV
signals in your modular synth.
It was made famous by Pink Floyd, who used it in their live shows to pan audio.
They used a quadraphonic sound system.
