For me the inbuilt keyboard speakers just let one know that the keyboards working...none of them are worth listening to and just don't do the keyboard justice.
A good pair of monitor headphones or powered monitor speakers will enable you to hear the keyboard as it should be heard and worth the money outlay.
Interesting. The pianos sound better through board keyboard speakers than anything else (except phones). When I play my 1000 acoustic pianos through the keyboard speakers, it's terrific. When I try to replicate that through a PA - awful. Keyboard speakers have a better crossover or something that adds middle to patches, particularly pianos. But we all hear what we here, no biggie
