Happy Sunday. I can say I have a love affair with the 3X and the 4X is even more incredible.

As far as sound, OMG, run in stereo speakers (QSC8S/10S) or others to bring out the beauty of the board.
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Live: Korg PA4X/EV Everse 8s/Senn 935/K&M stand

Studio: Korg PA4X/Yamaha DGX670/Boss BR900CD/Tascam DP24SD/MTM Iloud/Sony C80/AGK 214/K&M stand