You could always look for another Krell, and I’ll throw in Hegel (very high damping factor) and Bryston (SST2 or cubed models) as a couple others worth looking at for tight bass. Best of luck.
Lowend amp
Have had Krell Ksa 250 and 300S as Well as Ksa200.
Love the lowend control for B&w speakers.
Now these things are older wondering what amps have similar lowend control that are Very reasonably priced?