Yamaha PSR-S550

The Yamaha PSR-S550 is a digital keyboard and workstation synthesizer. It is designed for use by professional musicians, songwriters, and producers. It has been used by many professional musicians, including John Legend, Alicia Keys, and Pharrell Williams.

The PSR-S550 features a 61-key keyboard with velocity-sensitive keys, a built-in sequencer, and a variety of sounds and effects. It also has a built-in arpeggiator, a pitch bend wheel, and a variety of real-time controllers. It also has a USB port for connecting to a computer and a variety of other devices. The PSR-S550 also has a variety of onboard effects, including reverb, chorus, and delay. It also has a variety of onboard rhythms and styles, allowing users to create their own unique sounds.