The SH2000 is a preset analogue monosynth. The only changes that can be made to a preset are to change the filter cut-off and resonance, modulation and increase sustain. The powerful feature of the SH2000 is that it has "aftertouch", which you can use to increase volume, filter cut-off, vibrato, pitch-bend and "growl", with plenty of modulation and wow (aftertouch on filter cut-off) you can easily play really acid lines.Oh, and it weighs a ton!