Best Class A amp with SLAM


I'm looking for a couple of great class A bias amps (monoblocks) with the best "slam" as well as a sweet sound.

I recently sold 2 Krell KMA 160 mono blocks and I really miss them. What's out there that has the same attributes? I want 100-160 WATTS RMS that I can weld with if I want.
handymann
I actually have the XA100.5's. They're really good, but seem to not have that slam the Krells had. Perhaps I'm remembering them better than they were.
Why did you sell the Krells then? Those were amongst my all time favorite amps.