I tried it clean at first, and the room was quite big! It just sounded really smooth. The volume was 4, and the gain at 5, and it still took out 2 light bulbs in the roof. Then I tested it for 2 hours with all my pedals and I'm 100% happy with it.
And those rear ports are perfect, I could feel a steady flow of air coming out, thank you for that Alex.
I guess the people at the back of the room at the underworld will tell me how it sounds in June?
I'd like to test it with more volume really, but it wasn't our usual rehearsal place and the guy didn't sound happy about the noise haha.