^ Lots of laughs. You could always build a better PSU using a series regulated design. Quite, Very low output ripple/noise, abiet not as eff.
But on topic what you stated is 100% correct in this case.
When applied to a electric Fryng pan, well I guess it is the amps that generate the heat: Power = Current X voltage - LOL
Have good beginners guide? I have no clue of the proper coil values for a cap/coil/cap filter. I think that is all I need. I never knew how bad power supplies could be before trying to use one for audio.