They say 256 Notes of Polyphony... but on Yamaha's page it says...
256 MAX
128 for Preset Voices
128 for Expansion Voices

Listen through good speakers or headphones.

https://youtu.be/rFBTh3YC9C0
_________________________
~Johnathan
"The Shueys"
www.shueymusic.com
Yamaha Genos - RCF M20x - RCF HD10A (Stereo) - Jupiter Pocket Trumpet - Sennheiser e935 - Neumann KMS-104 plus-N