Tube VCA arrived today, just spent the last 45 minute breaking the surface with it. Absolutely loving this thing. Sounds to my ears exactly how a tube should for the amplification, plenty of sweet spots, and moments where it all just breaks apart to pieces. Compared to the Metasonix and Trogotronic stuff I've owned/played with in the past, which never got "hot" enough to my ears, or was too hard to dial in what I wanted, this thing cuts right to the point.
The dirty mode is a bit less impressive than I imagined, but also a bit redundant since the clean mode can easily be cranked into dirty destruction. Even at the lowest settings for the feedback knob, there is still some "leak" if the switch is engaged... and I see zero reason to ever disengage it. Even with minimal settings, it adds just a bit of delicious hum feeding back into the circuit making it come alive.
Definitely helps add some color, warmth, and harmonics to my digital oscillators. Like peanut butter and jelly. Dig it.