Find many great new & used options and get the best deals for Vintage 1986 YAMAHA Portatone PSR-31 Keyboard PCM STEREO 61 Keys AUTO BASS Black at the best online prices at eBay! Free shipping for many products!. Yamaha PSR-31 is a vintage electronic keyboard from the 1980s. It was used by many popular musicians, including Michael Jackson, Prince, and David Bowie. The PSR-31 is a 61-key keyboard with a built-in 8-track sequencer and a variety of sounds and effects. It has a built-in rhythm machine, a pitch bend wheel, and a variety of preset sounds.
Yamaha PSR-31 is an ultra-modern keyboard with a design based on the latest digital electronics technology. It features a built-in drummer with PCM/Stereo Rhythm Section. You can add accompaniment using the Auto Bass Chord Section and create original rhythm patterns using the Custom Drummer. With its external jacks, you can connect the PSR-31.. View and Download Yamaha PortaTone PSR-31 owner's manual online. Yamaha PSR-31: User Guide. PortaTone PSR-31 electronic keyboard pdf manual download.