Thanks Al. My real point is the outlet’s AC voltage varies that much anyway. At least every home I have
lived in. It varies that much at day and evening. Also, in my past tube builds that have voltage regulated B+ power supplies, they held the VDC ROCK STEADY and that does indeed help the output. The tube filaments are impacted a tiny bit with 3-5 volts swings, but really nothing one would hear the vast majority of the time. At least I have not. I think the AC is simply more “dirty” at peak times and that’s what causes our rigs to sound not quite as good.
lived in. It varies that much at day and evening. Also, in my past tube builds that have voltage regulated B+ power supplies, they held the VDC ROCK STEADY and that does indeed help the output. The tube filaments are impacted a tiny bit with 3-5 volts swings, but really nothing one would hear the vast majority of the time. At least I have not. I think the AC is simply more “dirty” at peak times and that’s what causes our rigs to sound not quite as good.