TL;DR- Grandmeister 40 sucks big balls, like most of HK. Loose, flubby, small, soft. The Flaccid dick of amps.
The one amp that sticks in my mind is the H&K Grandmeister 40. I was so stoked about this amp, as it really did look like a winner and when I tried it on its own, it was OK. Truthfully, I can't imagine how they were able to make a 40w tube amp so damn small sounding. Nothing you did would make the guitar sound the way you wanted.binthought it was EVERYTHING else about my setup. After going through months of trying to get it to sound as good as a damn Peavey Vypr, I thought I got it set alright. Then it started having noise issues and I also had to deal with their horrible customer service. Bottom line = amp sound mediocre AT BEST. So glad things worked out the way they did. I have a Rivera Clubster Royale Recording Top and absolutely love it. The gain channel is just a monster and nails the tones I was trying to achieve in seconds.