This Module is currently available.
Oscillator Mixer for Q106
Use the Q161 Oscillator Mixer next to your Q106 oscillator to easily create new waveforms. Simply select the amount of Triangle, Sine, Ramp, and Pulse waveforms used to contribute to the final waveform which is available at 2 connectors.
The Q161 is connected to the Q106 oscillator using cables behind the panels. Requires exchanging connectors on the Q106 oscillator. Soldering not required. Does not interfere with use of a Q141 oscillator aid.
These merchants probably sell this module. Huh?