NAD

[Aceman]

Small cheap @$$ stuff is getting awesome. My Mooer 900 is pretty sweet too!

[80's_Thrash_Metal]

That sounds really really good. I'm sure the efficiency of your 4x12 has something to do with it being so loud. I once used a Marshall Lead 12 through a 4x12 cabinet and it was surprisingly loud. And it sounded great.

Are there other amps by them like this?

They have a whole lineup of copy amps.
I also just bought the VIVO which is their 5150iii copy.
they make an orange, an AC, a Mesa, couple more