Keyboard: 88 weighted keys with GHS action (heavier low end, lighter high end)Sound Engines: AWM2 (sample-based), FM-X (8-operator FM synthesis), and AN-X (virtual analog)Polyphony: 268 notes total across the enginesControls: Super Knob, 8 physical faders, 4 multi-function knobs, and a 7-inch color touch screenInterface: Built-in 10-in/4-out USB audio and MIDI interface for direct DAW and computer integration