Korg TRTK25 USB MIDI Controller with TRITON Engine All 512 program sounds of the TRITON, the best-selling KORG music workstation A compact and lightweight synthesizer with semi-weighted keyboard Use the velocity-sensitive backlit trigger pads to enter chords or single notes A full array of DAW presets and basic functionality X/Y touch pad can also be used as a track pad; ribbon selector offers left and right click