USER INTERFACE Straightforward, pleasant, and very useable. Much like the rest of the synth.
SOUND This thing is a vintage-analog beast! At its core is a multimode filter that not only covers the usual options - bandpass, allpass, bandreject, hipass, lopass, most with several different amounts of poles allowed - but also can be toggled between Minimoog, Xpander, and MS-20 imitations. The versatility this gives the synth can't be overestimated. It can go from crushing, dark resonant basses to pristine keyboards to outrageous self-oscillation (which is actually outrageously usable, more than any other freeware synth that I've tried).
FEATURES This thing has two oscs, a filter, and an LFO. I'd give it a lower rating for being so barebones, but the filter - what a filter! - elevates it at least to an 8. I've seen plenty of much more complicated synths that can't produce nearly such a range of sweet sounds.
PRESETS Lots of vintage analog-y sounds, as you'd expect. All of them sound great, and they do a great job of showing off the synth's capabilities, though the synth begs to be manually tweaked.
STABILITY I've never had any trouble with this synth crashing and don't expect to any time in the future. Solidly programmed.