[Amps] Direct rectification of AC mains to drive the amp, VDD Supply

[Don Jones]

This is tricky. If the outlet you are using as the source is not daisy 
chained to a bunch of other outlets and goes directly to the panel, and 
you use a true 3 wire connection L1, L2 (or N) and Gnd, you can "get 
away" with it provided you use an appropriately selected EMC filter too. 
It is safe and efficient? no, heed the advice that you have been given 
by others.
Vy 73, Don KO7i.