Tony, several Korg users have stated that it took a lot of tweaking and adjusting to get the instrument where they wanted it, and some were never quite satisfied with the results even after months of twiddling with it.

Others had better luck and appeared to be quite pleased.

Personally, I'd rather be playing and enjoying the instrument ASAP, although I suppose small tweaks are inevitable even after a good deal of time, especially when adjusting for different room environments at various gigs.

Good luck with your planned PA-600...it is probably not much harder than your Technics to set up, and I'll be looking forward to your impressions of the instrument.

Ian