A lightweight design built to just tap power coming from the line......well that sounds about right.
Class D for ex.
An older larger amp with huge power supply and filter caps...could do more.
But you may need a larger breaker.
Don't take what I say as gospel either lol!
I'm going off what the older and wiser have told me through the years.
I should ask my fav tube amp repair guru Dave Sarge in State College.
That guy is a genius.
When Mesa Boogie refused to share a schematic on an amp he was repairing...he sat down and made one and sent it to them just to prove a point. lol