Yamaha PSR-S770

The Yamaha PSR-S770 is a professional arranger workstation keyboard. It is designed to provide a wide range of sounds and features for live performance and studio recording. It has been used by many professional musicians, including John Legend, Alicia Keys, and Bruno Mars.

The PSR-S770 features a 61-key keyboard with touch response, a large selection of voices and styles, and a variety of effects. It also has a built-in 16-track sequencer, a USB port for connecting to a computer, and a variety of other features. The keyboard also has a built-in arpeggiator, which allows users to create complex rhythms and patterns. Additionally, the keyboard has a variety of real-time controllers, such as pitch bend and modulation wheels, and a variety of assignable knobs and buttons.