Tech 21 Trademark 60
This can be described as a versatile “blues” sound in the style of a Marshall Plexi. I personally use it for chunky Black Francis-style chord thrashing.
Growl: 10-2 0′clock according to your taste
Level: doesn’t matter
Don’t forget to use the volume knob on the guitar. Channel 2 gives a much bigger clean sound than channel 1 though you’ll have much less headroom.
I use the Korg just to add a little compression into the front end of the amp. To my ears it sweetens things up though too much kills the tone.