in the USA line votlages have gone up, up up.... not only is this hard on your vintage amp, it also is causing it to run incorrectly. You're not hearing it the way it was designed to sound. Youc an pull a van halen and run a variac, but theyc an be costly, they're heavy as hell and if someone accidentally bumps the voltage up while you're playing you'll fry your amp for good... the BrownBox handles the job of slight line voltage reduction. it has a few settigns getting all the way down into EVH 'sponge out' turf. This device works rally well. I would endorse it. Set and forget. Not too heavy. Well built. Reliable. Safe.