I have a 59 Bassman LTD. It is an amazing amp in all regards. And yes, it's too loud (tell me if you've heard this story before). With my LP w/ PAF's, I get a reasonably clean tone at "3" on the bright volume and from there up the amp doesn't get louder, just gloriously dirty. It's fun to get my pant legs flapping at home, but it's a bit much for the small stages I play. I have an Airbrake, but it's not good for a 2 ohm load. So I have the parts on order to install a LarMar PPIMV, to knock a few dB's off on stage. Most who have installed these seem pretty happy with them. Any down sides I need to know about?