The ultimate hybrid synth experience. The Roland JD-Xi Synth is the ultimate analog/digital synthesizer which combines the best of the analog and digital worlds to create a versatile and comprehensive synth The JD-Xi features 37 velocity sensitive mini keys a four track pattern sequencer legendary supernatural synth tones 128 voice polyphony and gooseneck microphone for impressive vocal effects. T feature-packed design ensures the JD-Xi Synth is the only synth you will need to create impressive and expressive tracks whether performing live or in the studio.