I'm not fussy on the speaker bar, but it isn't any worse than the attachable speakers on T.
I think Korg's are worse because they block your hands from the audience's view even more so. With Tyros, they can see your hands. I am actually surprised that they built something like this... I would think that with a little input from giggers, they would get my reaction. And they do call this a "professional arranger," so I assume they are going after giggers.
My beef with the Tyros speakers is the fiddly setup (two sats and SW)...I prefer built ins, which is another reason why I use a PSR-S910.
Also, I'd
never use an MP3 player, let alone need
two of them, but there will be people that will find them essential in their performance.
These instruments, Tyros4 and Korg PA3X, are intended for different markets, although they do overlap in many places.
So far, the Yammie seems to be more of a player's instrument in style play mode, but, subsequent Korg demos may show they are closer than I think.
I know I'd sure love to spend a few days with a Korg...some of those styles are excellent.
Ian