This synth is an odd duck. There are no dynamic filters (where the sound gets brighter with velocity) or even proper global filters, except for the mono synth. You can only have reverb and one digital effect going simultaneously. The MIDI controller changes freeze up sometimes so you have to reset the sounds by turning the power off and on.
However, the step sequencer is quite useable, and the phrase sequencer is good for unquantized parts. It's fun, if limited, to program, and it has a real groove factor with the sample looper.