Yamaha PSR-11

Yamaha PSR-11 is a digital keyboard synthesizer released by Yamaha in 1985. It was used by many professional musicians, including Herbie Hancock, Chick Corea, and Jean-Michel Jarre.

The PSR-11 is a 61-key keyboard with a built-in 8-voice polyphonic synthesizer. It has a variety of features, including a built-in sequencer, a built-in arpeggiator, and a variety of preset sounds. It also has a built-in rhythm machine and a variety of effects, including reverb, chorus, and delay. The PSR-11 also has a built-in MIDI interface, allowing it to be connected to other MIDI devices.