Having heard Krell gear in the past and being a ProAc owner I think this is not a good match. The type of people that own Krell and ProAc in general seem to have very different taste and priorities in music reproduction.
Krell owners seem to favor more neutral and powerful presentations while ProAc owners might be considered more the romantics. Also, many people, nyself included seem to think ProAcs do their best work when driven by tube amplification. The reason I say this is that ProAcs are known for their organic midrange, and a solid state amp like a Krell wouldn't work towards this strength, where as a tube amp more likely would.
I've tried Simaudio and Electrocompaniet amplification with ProAcs in the past and felt both sterilized the ProAcs to a certain extent. Introducing a tube DAC and a tube preamp into the mix and matching them with a slightly warm solid state amp produced a balance of power and warmth I really like. However, everything I've assembled in front of the ProAcs probably goes counter to what a Krell would produce.
Something to think about. Good luck.
Krell owners seem to favor more neutral and powerful presentations while ProAc owners might be considered more the romantics. Also, many people, nyself included seem to think ProAcs do their best work when driven by tube amplification. The reason I say this is that ProAcs are known for their organic midrange, and a solid state amp like a Krell wouldn't work towards this strength, where as a tube amp more likely would.
I've tried Simaudio and Electrocompaniet amplification with ProAcs in the past and felt both sterilized the ProAcs to a certain extent. Introducing a tube DAC and a tube preamp into the mix and matching them with a slightly warm solid state amp produced a balance of power and warmth I really like. However, everything I've assembled in front of the ProAcs probably goes counter to what a Krell would produce.
Something to think about. Good luck.