A VCO from Patching Panda. Really a good one, lots of waveforms, lots of mod inputs, lots of cross-collaboration in the unit. And it sounds really good too. I went long on the test/demo section because I was having fun just playing with it.
Hybrid boards, many surface mount components pre-installed but plenty to solder. Good build, though some soldering is tight and very close to SMD components so care is advised. Not a beginner kit.