My plan is to get the BeePre in the near future. Could Doc, PJ or PB tell me, do I need to crank the line voltage to up 255v, as my 220v Paramounts, in order to maintain the correct filament voltage? I use an automatic regulator to have a constant 230v and another manual slide regulator after it to bring the voltage up to 255v for the Paramounts. I hope either one of the two voltages would be the correct voltage for the 220v version of the BeePre.