Yeah, I've read that site before & I agree with TS808 about the EQ discussion.
This statement
"Thus the Champ is 5 / .002 = 2,500 times louder than the desired level, which is headphone level."
is completely odd.
The desired level is to have your amp as loud as headphones?
Go ahead! Place your headphones in the corner & crank'em & see how happy you'll be.