Larger quantity of bass is always associated with lower quality and
accuracy, as shown by the Krell.
Only one thing to say about that, and it’s double phooey!!
I would say that the KRELL would be preferred by the majority of people.
True, nothing wrong with Krell bass, it’s most controlled, tight and dynamic bass of nearly any other amp I’ve heard. (BJT (bipolar) done right, can’t beat it)
And it’s does hard loads better than the AHB2 because it does far more current into them than it can, and bridging the AHB2 into mono won’t get it up there with a Krell, if anything it’ll be worse just louder (more watts but less stable) than the stereo into low impedances.
Cheers George