I was lucky when I was playing around with the demo-I hit random and got a glimpse of what this could do before the 3 minute limit hit.Now that I've owned it for a while; It has two oscillators,switchable between pulse,variable triangle and sawtooth.The first oscillator has a suboscillator,and there's a noise source. The filter's a 24dB/octave,with resonance and key tracking.There's three envelopes;pitch,filter and amp. Each envelope is 4 level/3 rate,so there's a lot of control.One of the coolest things about Fat Machine is the way velocity can modulate attack time,attack level and decay level. You can set up different velocity response for each of those parameters for each envelope.Wonderful stuff!There's also a random control that sets a different attack level for each note. Very organic sounding. There's only one LFO,but with a bunch of good modulation options. You have separate mod pages for uncontrolled LFO,LFO controlled by the mod wheel.and LFO controlled by aftertouch.There's 5 destinations.Both rate and delay are syncable. It has a glide section with the option to set constant time or constant speed.The instrument is switchable between poly,mono and legato modes. The drive control is at the heart of the Fat Machine's sound. A lot of the presets that weren't quite to my liking became more alive by tweaking the drive.By the way,there's a bank of 108 presets that comes with Fat Machine. It has a random patch generator,and by Shift-clicking the randomize button,it will randomize a whole bank.Cool...there's also compare and recall functions. I'd like to see oscillator sync also,as well as being able to assign the pitch envelope to just one oscillator. So,how does it sound?With the drive turned up,FAT!I could clone my sadly departed Pro-One's sound easily, as well as get a close to Mini sound(I never owned a Mini,but I've played them often enough...).Using one oscillator,I could get all those early Roland bass sounds easily.For $29, a STEAL!