I have a friend who use to own a Sunn Beta Lead..Auugghh! I swear I tried for an hour and a day to squeeze a decent tone outta that atrocity. Even the clean tone was hollow and completely un-motivating. Sorry to anyone who may have one but...DAMN! I later saw Ronnie Montrose at a festival playing Bogners. He musta been using Iraqi tubes cause they were farting like the campfire cowboys in Blazing Saddles!