I don't think the artists have much control over how loud they are or how good the sound quality is.

Some named artists bring their own soundmen in. Seth Lakeman is a prime example. He had his own man and the sound level went up, badly so according to my informants, who walked out. I am told you can't understand Seth Lakeman at sensible volumes, but may never find out myself.

Tickled Pink are always loud. Loud is their brand. Simon Care once said to me "We are a loud band, thats what we are, if you don't like loud, don't book us". I don't book bands so how does that work?

I rest my case.