Hi,
I can't hear any difference in the demo's, there again , I'm listening thru a $300 notebook.
Personally I can hear a difference between my PA800 & my PA3x when played thru same soundsource.
Whether or not the difference in sound would make it worthwhile for someone to upgrade, really don't know, suppose depends on the individual.
If all the upgrade gave me was slightly better sound quality, I probably wouldn't have bothered.
Pa3x has a better feel when playing.
It's got extra new voices.
It's got new styles.
It's got 4 fills instead of 2, making the transition smoother between the variations.
It has auto fill if one wants to use it.
It has a Chord sequencer.
It has XG mapped drumkits.
It has new Guitar Mode 2, way better than Guitar mode 1, because it can have a mix of midi & guitar mode notes in a single track.
The above reasons are just some of why I felt it was worth me upgrading.
I suppose if new feature & functions don't matter to people why would anyone bother upgrading from a T2 to a T4 . I'm sure the IDENTICAL style would sound just as good in either a T2 T4 or even my psr1500. ( Identical would mean dumbing to something my PSR could play)
Reason why my PSR1500 doesn't sound as good as a T4, is the quality of voices & the newer technology.
You get what you pay for.
Just my 2 cents worth .haahaa
_________________________
best wishes
Rikki 🧸
Korg PA5X 88 note
SX900
Band in a Box 2022