'PS' in its model number stands for 'PortaSound'.
This classic analogue instrument is reproduced in detail,
including the Automatic Bass Chord styles and arpeggios.
In addittion to the detailed recreation of the PS30, there are many new voices created using the full power of the Yamaha Digital Workstation, modifying the basic waveforms sampled from the PS30.
A 'must have' for any Yamaha keyboard aficianado!