88-key weighted hammer action with polyaftertouch (poly pressure), 4 midi outs, multiple zones, wheels and joystick bend and modulation. Closest thing to a Kurzweil Midiboard The screen has been replaced and upgraded to an LCD display so there is no buzzing. Also had the aftertouch modded to make it more responsive. I believe it was a variable resistor so you could change it but you'd have to open it up to do so. Roland Boss Korg Yamaha Dave Smith Moog Novation Akai Sequential Circuits Kawai Nord Access Virus Waldorf Arturia Poineer Synth Synthesizer Modular Drum Machine Sequencer Gear Recording Studio Rack Midi Audio Interface Ableton Live Daw CV Gate Native Instruments NI Maschine MPC