For me, I am still learning my way around this amp, but one of my "aha" moments with the crunch channel was that you really have to push the power tubes to get that saturated grind. I had been tweaking in 45 watt mode at home-levels and not getting that saturated sound I was used to. I bumped up the mids a bit and threw it into 10 watt mode and "ahhhhh" there it is! :lol:
There isn't much to be improved upon on this amp - and I know nothing about designing an amp, but it would be kinda interesting if there was two graphic EQs. I find I really set the GEQ much different for channel two vs channel 3 - more of a mid-hump than a V like on channel 3. This has forced me to experiment with the presets in channel 3 alot more.