I bought this for that old school analogue sound where the filter can get really snarly and nasty, or bouncy and snappy. I've been able to get almost the exact sounds of say Kraftwerk albums, the soundtrack from the first Terminator movie, John Carpenter's movies, and much more. It tracks fine, but you need to have good technique, play cleanly and carefully. It's a missed opportunity that it doesn't have an expression input or presets, but I still can't praise it enough for bringing so many truly analogue synth sounds in such a small and affordable package. I own several great synth pedals, like Enzo, Dirty Robot, Bit Commander, and they have other strengths, but none of them capture the sound from that early synth era like this. Solid build-quality all around, I especially like that the knobs for selecting algorithms travel very sturdily from point to point instead of just slide. Great product!