... fidelity Desktop, dual headset microphone, MIDI, LCD display Electronic Digital PianoSPEAKER: 6.5 in. full-range high-fidelityDesktop, ... 88 Progressive Hammer Keyboard Audio: French DREAM sources; 64 Maximum Polyphony Display Screen: LED display Tone: 128 tones Rhythm ... function Tone Control: Sustain, pitch, Yinfen fine-tuning, DSP digital sound effect Interface: Headphone, microphone, MIDI IN / MIDI ...