Yamaha PSR-70 Portatone Arranger Keyboard

The PSR-70 Portatone Arranger Keyboard was launched in 1985. It was one of well over 100 models in the Arranger PSR series, which began in 1984 with this model and the PSR-60, among others, and included models for beginners and professional musicians alike. It followed on from the PSS Portasound series.

The PSR-70 features a 61-key keyboard, a built-in sequencer, and a variety of 32 sounds and effects. It also has a built-in rhythm machine, allowing users to create their own beats and rhythms. The keyboard also has a built-in arpeggiator, allowing users to create complex patterns and sequences. Additionally, the PSR-70 has a built-in MIDI interface, allowing users to connect the keyboard to other MIDI-compatible devices.