I just got a used silver face with maroon accents Walkabout head, has only 1/4 on the back. Anyways, with everything flat and the gain at 9 and master at 9 its stupid loud, I mean like 800 watts loud. It is super sensitive to me touching the strings ect. It picks up everything I do like the gain is cranked all the way. I can turn it up to half and its just silly loud and it reproduces every little string touch or slide....its not right, theres no way this head is this loud at 300 watts. What could be the issue? Anyone heard of this? Im running it into a 4ohm cab, a brand new GK412. This Mesa is WAY louder than my other bigger heads. What could be the deal????