I recently had the S970 and the Pa4x side by side in my studio. The Bose was used for both keyboards – same settings. No EQ on either keyboard.

I found the S970 to be thinner in sound. The pa4x was far ahead with Big Band and Latin.
M
y bottom line ---- The pa4x sounded like the band I would hire for my next wedding. I took a loss and sent the S970 back. (I will miss the large selection of styles for Yamaha. My thought has always been; don’t divide your creating with two different keyboards – you have to lose something. Only my opinion.

John C.