The 501M blends the selected wave outputs of oscillator 1 and 2, plus three individual outputs of oscillator 1 (sine, sawtooth, pulse) and white noise.
The bipolar attenuators allow to invert the source signals, too. Each channel has its own mute switch with a LED.
The three output jacks provide a mixed output of both oscillator sources plus two individual outputs for vco 1 and 2 overriding the six mute switches (always ?on?).
5HE-Modul ,Moog-Format. Eine Einheit breit.