I wouldn't be so fast to get rid of all your Krell components. I've always found Krell's digital products to be lacking. No so with their other components.
Simaudio 870a over Krell 402e?
I have always been a Krell guy until I purchased their Cipher CD/SACD player. Long story short, I now own a Sim 750d CD and a Sim 740p pre and have been absolutely FLOORED by the two pieces compared to my Cipher and 222. I would like to trade out my 402e for the new Sim 870a to complete the package, as it has been such a step in the right direction...but I can't audition the amp first. Anyone heard the new amps? Thanks, Beach.