Hi Zuki,
Currently I still have both, though, I will be selling my pa3x shortly, we’re planning on downsizing homes, so need to sell a keyboard or two.
Even though I’m only a hobbyist, I feel Pa4x has more to offer. Sound quality is better. Direct play is extremely handy. Being able to just copy and paste styles is great, makes organising styles so much easier.
You really should try and get your hands on one, to appreciate the difference.
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best wishes
Rikki 🧸
Korg PA5X 88 note
SX900
Band in a Box 2022