Yup a modular synth piece of awesome. Buchla and Moog were the pioneers of electronics as a musical instrument. West coast (buchla) and east coast (moog). Seeing 'fluctuating random voltages' immediately made me want it for my diy modular, I'm sure theres a DIY schem out there for some of this stuff.
That being said we can thank china for including some or all of this module in many of the things they make