JB, let me understand: there are two configurations:
1. A Krell integrated used on its own.
2. The same Krell integrated used as a linestage in conjunction with a NuForce and a yet unspecified IC between the two.
Observations: there exists a 2nd hand report, according to which One of the two configurations above may have sounded thinner than the other, but we do not really know which one. Given the ambiguity of the findings, and the necessity of there existing an additional unknown IC to add to the variables, I am not sure if this finding is bringing us any new knowledge quite yet. Could you clarify with your friend?