Thanks all for your support, I'm trying to get my head around this. Yes, major acts use it, but God knows how and why. A full band compressed and sent through the FOH might work well with this if a sound engineer is around to help shape the overall sound, but still I don't see how this can be played. I recorded some months ago 5 songs with a kemper straight-to-desk and it didn't seem bad. All I was hearing were the studio monitors. I can't say I'm accustomed to it, but definitely no stranger.
Actually at low volumes it sounds much better than turned up. I've been toying with the Friedman at home, it's definitely not my go-to amp but I can get a usable sound out of it. I will take some time tomorrow to get to our studio to crank it up again and see if it behaves better. Maybe the low-cut in the power amp is the crucial factor in sound since the BE has it set up all the way to 500Hz, which should basically cut all the beef from the guitar, however it manages to sound cleaner without loosing low-end. I'll also try the same trick but with the cab low-cut set higher and the amp in full spectrum see how it works. It need the sound to be usable with the band, it must be dynamic and....to sound good dammit.