mleduI dont know very much of anything on tubes and this will be my first tube amp I will own, but if I use that 12AU7 to 6SN7 adapter you mentioned, wouldn't the tubes that plug into that adapter be made for 6 volts instead of 12v like the stock socket? Maybe that isn't right at all but I thought I read in trying to learn about tubes that the number at the start was the voltage it is supposed to run at.