Pretty rough still, vs the 3X. Set my 4X back up last night after gig to keep working on it.

Is it miles ahead of the 3X? No way. Most songs sound the same, some sound a bit more defined (through headphones) and some don't match up against the 3X beauty. I believe the 76 keys make for a better sound dispersion overall.

That said, will not give up on the 4X. I have eliminated the mixer and have 4 outputs going directly into the QSCs. (2) for independent vocal control and (2) for independent keyboard control. I went back to the Apex stand it is so CLEAN............all wires behind me. The small keyboard footprint looks almost childish. LOL

The 3X will stay around for a bit longer.