I recently upgraded to an Ashdown tube preamp. It sounds awesome, but I like to play with the gain. I want one song to sound dirty, another song clean and punchy, etc... I play through a cheap PJ and really like P tone for some songs, growly J tone with some distortion for others. Just changing pickups effects my volume pretty radically. How are sound guys going to feel about that inconsistent level? Is this just a bad idea? I can just use a distortion pedal with a volume control to get distortion that doesn't change my volume, but it doesn't sound as good to me.