Alesis Micron SE Features:

Industry-leading ION analog-modeling sound engine in a compact package
8 voices, each with 3 oscillators, 2 multimode filters, 3 envelope generators, 2 LFOs, sample and hold, and tracking generator
4 multitimbral parts capability
Programmable step sequencer and arpeggiator
Programmable rhythm sequencer for drum kits
Dynamic realtime phrase sequencer
Stereo buss effects, including reverb and 40-band vocoder
1/4" balanced stereo analog outputs and inputs with 24-bit conversion
37-key, synth-action velocity sensitivity keyboard
3 continuously-rotational 12-bit parameter knobs
2 assignable modulation sliders
Pitch wheel
Expression and sustain pedal inputs
Compatible with ION programs