I've been catching up on the Modwright Transformer Tube Rolling thread (83 pages!!). The Transformer is a sort of DAC/preamp/streamer. I'm interested in trying the EML Mesh 5U4G rectifier in my device, but the threads warn of early death if the voltage is too high to the tube. Luckily, my Transformer has had the modification to lower the voltage going to the rectifier to below 5v. BUT...my house current is higher than 120. I have a CyberPower CP1500AVRLCD UPS, which is supposed to keep the output to within 5% of 120. The highest I've seen is 127. Usually it's 123-4.
What does this mean for the voltage that the rectifier will see? Am I in danger of zapping the tube? The Transformer uses an oversized toroidal transformer (not sure if that is relevant).