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It's a fun noise maker and experimental machine. But you have to go on the instrument's journey, rather than take the instrument on your journey. If you have a musical idea in your head and want to make it come out of a speaker, the subharmonicon has a pretty difficult workflow to make that happen.

You can get a really thick tone of out it, due to the architecture of its sub-oscillators, but like mentioned already, it takes a little bit of math and music theory (or just a lot of tinkering) to find the proper ratios for a properly harmonious stack of subharmonics. I also like that it has separate VCA and VCF envelopes, it'd be nice if the Mother-32 had that (not sure how they'd fit the controls on that panel though).

It has 2x 4-step sequencers. That's limiting in a way that can be creativity-inducing, but the fact that they're only controllable by liiiiiittle tiny potentiometers makes it difficult to dial in or perform live. The quantization options don't help either: You've got chromatic (reasonable, but it means you need to be careful for dissonant out-of-scale notes if your other instruments are tuned to a diatonic scale), and a few different xenharmonic scales (which can be cool but are really hard to play with other instruments unless you've gone all-in to microtonal world).

The rhythm/gate generation aspect of it is very cool. It's a great polyrhythm machine, just an awful lot of HP for that job :P

That's super cool.

Plaits is a great place to start in modular.

Super versatile and playable sound source. MI closed up shop a few years ago, but all of their designs and firmware are open source so several companies offer a clone of it.

This is a dead thread but because the question was never properly answered:

Each power bus/ribbon cable on the uZeus (or any Eurorack power supply) contains wires carrying all of 0V/GND, 5V, 12V, and -12V. This is what TipTop meant when you asked which bus to use: Either one, because both buses contain all of these voltages. There isn't a "positive" and "negative" bus in that way. Sometimes people may refer to any one of the voltage supplies within the ribbon cable as a bus, which is reasonable if you're drawing up a schematic for a single module, but less so if you're connecting multiple modules in a case. Personally, I'd use "Power Bus" to refer to the entire ribbon cable's worth of power supplies.

It is important to always connect your modules to the ribbon cable correctly: There should be some indication which side of the module's power connector lines up with the red wire on the ribbon cable (which indicates the -12V side of the ribbon). If not, call the manufacturer and chastise them for not making that clear.

A common use case for the -12V supply is amplifiers: if you want to amplify a signal that goes below 0V, it's helpful to have a negative-voltage power supply to make that happen. This could mean VCA modules, or just op-amp components (which appear in almost any analog circuitry).

EDITED Sep 26th, 14:57