Im wondering how you can evaluate any phono stage with one cartridge, especially an mc. Every phono stage is going to behave diffrently with various cartridges. In my opinion there is no superior phono pre for all cartridges the trick is finding the right match (and step up) to get the sound you want from the cartridge you like. I dont like the same stage for my 103d as I like for my insider and they dont use the same step up. Whether or not the K&K sounds good with Pedrillo's sumiko will be a matter of his expectations and doesnt reflect on the relative quality of the K&K.