I've got the two Eurorack modules I preordered last year, Joranalogue Walk 4 and Fancyyy K-Accumulator.
Walk 4 is cool. It's basically a set of 4 circuits that do this:
- on each clock pulse, add the input + knob + random value from its own white noise generator, to the current stored voltage
-- optionally, if it's above a certain voltage, reset it to 0V.
Plus a clock generator which runs above audio rates, and some other stuff. So you can generate steppy sawtooth or LFOs, mix in noise, have it generate random walks, process external signals as sort of a weird sample & hold, generate subharmonics etc. It's pretty flexible, and more experimental than designed for anything in particular. By setting different step sizes for the 4 accumulators it can generate chords for instance, or self-patch and have a sort of fractal evolving random thing going on.
K-Accumulator is, without getting into too much detail, a mega-complex oscillator. The 2-op FM of a traditional complex oscillator is just one of 8 settings on a Morph knob that crossfades between the settings. The main oscillator has this harmonic shift/stretch magic, and feeding that back to modulate its own phase accounts for most of the other settings. Plus there's another couple of modulation sources (a function generator and a random loop), and a pitch controller with quantization for setting up whatever frequency relationships you want between everything. It pretty much immediately became my favorite complex oscillator.
Between those two I just have no temptation from other hardware or software... I had a ton of stuff that deserved more exploration even before these arrived, and now even more so.