I picked up a Hot Rod DeVille 4x10 used at my local GC this week, got a killer deal! Great sounding amp, but EXTREEMY LOUD!!!! Especially for basement use. Somebody brought to my attention that you could swap out the 6L6s for 6V6s, lower the wattage to around 30w and make the ear bleeding stop.. I ordered the tubes yesterday and i also pulled off the back cover to find the bias test point and bias pot....looks like it will be a easy transformation.