: The PSR-S970 has 512MB of dedicated expansion memory. You must keep an eye on your total file size in Yamaha Expansion Manager to ensure you don't exceed this limit. File Formats :
Depending on your musical focus, here are some of the most popular expansion packs: yamaha psr-s970 voices download
Select your installation file from the screen and press . : The PSR-S970 has 512MB of dedicated expansion memory