Yamaha REFACE DX FM Synthesizer - 37 Mini KeysYamaha's Reface DX is a 37 key mobile mini keyboard with a 4 operator FM Sound Engine, two programmable effects blocks with seven effect types per block, sustain pedal input, phrase looper, built in stereo speakers, MIDI connectivity, aux input, and dual line outputs. Control Based on the FS action found on the flagship Motif XF, the reface's HQ (High Quality) Mini Keys provide premium feel and response for fast, accurate and natural playing. The