Battery powered (6 AA?s) or AC powered (with included power adaptor) Pattern-based 48-track sequencer with 16 MIDI channels 32-voice drum/phrase sampler with up to 128MB RAM Velocity and pressure sensitive pads for responsive, accurate programming 12 Levels function: one sound on all pads with varied level or tuning per pad Built-in Compact Flash drive and USB port (Mass Storage Class) Support for standard WAV files and MIDI sequences Built-in Analog I/O, headphone output, and MIDI In/Out Internal sounds in Flash 4-way sample layering and velocity switching per pad 1 low pass filter with resonance per voice On-board effects: 2 stereo effects and a Master effect