Guys, don't get me wrong here, I'm not saying it's the Axe - in fact I think it's guitar related (if it was the Axe, the 'noise' would be the same for every guitar that I plugged in, and it's not). If there is a particular guitar that I'm using with a particular amp sim and the 'noise' is there, I've usually found that the BRT switch is on, and by switching that off and switching on the SAT switch instead, gives a good compromise - cancelling the BRT diminishes the problem greatly and adding the SAT puts back the gain without adding the 'noise'. Another thing that I've found is that lowering the input impedance also helps a lot, but for me, it always ends up sounding muddy that way, like a tone pot rolled back. Once again, I DO NOT think this is an Axe issue
Gary.