M-Audio PROKEYS 88SX 88-Key Lightweight Stage Piano with Semi-Weighted Action 88-note semi-weighted action keyboard &gt; great feel, light weight 7 premium sounds including multi-layer stereo grand &gt; professional sound USB MIDI interface plus pitch and mod wheels &gt; expressive MIDI control 2 front-side headphone jacks &gt; private practice or teaching Sustain, sostenuto and expression pedal inputs &gt; total control