I recently bought a Bose S1 Pro to replace my very heavy Fender Passport. I'm very happy with this purchase. The sound quality is much better and the 950 internal equalizer is doing its job much to my satisfaction, except for one instrument: Piano (any preset Piano Voice). All other instruments sound excellent with the style volume set at 75 and R1 at 100. Boosting the volume up to 127 on the Pianos improves the sound quality somewhat, but, they still sound tinny and "distant". BTW the Bose is connected with a mono cable to the L+R on the PSR and the Bose treble and bass are flat.
The only way I can utilize a good Piano sound is to rely on my favorite instrument registration bank, where the Piano is fixed through Voice Set.
So, I'm not totally without a good sound, but it would be nice to play with a Style that has a piano voice without relying on the registration bank.
Any help from knowledgeable forum is very much appreciated.
Thanks
Gerry