This module is the heart of my setup (yes, LFOs in audio range), including live performances. I love the sync modes and fm functionality.
There are only 2 tiny issues (one can live with):
(1) it needs to warm up. According to manual it takes 20min but I did spectograms and for my needs (microtonal stuff) they require ~45min (from powering on to the stable point all 4 oscillators seem to slowly raise the frequency -- mind Ilive in a very hot climat).
(2) when I try to tune 2 of these vcos very close to each other, instead of nice "flangery" sound I get a dull tone -- somehow they tend to converge towards unisono. This is mentioned in the manual.
Ah, for "musical" applications mind they don't track too well for higher pitches, obviously A-111 would be a better choice.
Nevertheless, top notch module for a very good price.