One of many moot points one could have chosen to clarify, but as I have pointed out, he is taking a rectified view of AC amplification. But never having come across it before in the 125 years of electronic development that I have read up upon, I have decided to opt out. I think with this halfwave, positively oriented amplification concept that bias might be .75V, but now that things are being refered to DC and in RMS (new buzz word) I couldn't say what that might be. Of course the major factor not yet mentioned is the efficiency of phase inverters to do the top half descending of the swing with more POWER than the bottom half trying to ascend. But being a Fender, where the tubes are mounted hanging upside down, then of course the lower half of the wave is now the top, and so the lower (now higher) wave has the greater inetia of Conduction Angle on the falling slope. This is then not a positive and negative halfwave thing, but a shift of phase to the ascending/descending halves of the wave form. True balance of phase inverter load is then naturally only obtainable with the tube in a horizontal orientation, being sure to keep the two sides of the triode also horizontal -this more of a long-tailed-pear anomally, as the cathodyne splits on one side of a double triode only - this one would then naturally have to be lower than the other side, that would be driving it.