This octave buffer PCB was an original Moog modification to improve the octave switches' stability (the PCB just contains three operational amplifier ICs).
This octave buffer PCB was an original Moog modification to improve the octave switches' stability (the PCB just contains three operational amplifier ICs).
Studio Electronics Midimoog - Octave Buffer - Image by Nikolaus Riehm - Equipment courtesy of Wallysworld