Hello Ben...
I have had a few Krell's over the years and keep going back to the FPBc/cx's. Although the more recent units are still all great amps with some of the better build quality, there just seems to be something missing. Given the used prices on the older FPBcx's it sure makes solid sense to me. You do lose some convenience with their massive size/weight but I find a warmth, smoothness, cohesion and naturalness that seeems to be lacking in the newer lines. I do use a KAV 3250 as well for Ht but FPB 600c for reference and love it still.
I have had a few Krell's over the years and keep going back to the FPBc/cx's. Although the more recent units are still all great amps with some of the better build quality, there just seems to be something missing. Given the used prices on the older FPBcx's it sure makes solid sense to me. You do lose some convenience with their massive size/weight but I find a warmth, smoothness, cohesion and naturalness that seeems to be lacking in the newer lines. I do use a KAV 3250 as well for Ht but FPB 600c for reference and love it still.