Being that your pre-amp is an LS16MK2 (6H30 Tube version) and not a MK1(6DJ8) version, that could be your problem. I would remove that from the system and try another pre-amp as a first step. The Kimber Hero and 8TC tend to sound brash in the mids, so here is another weak link. And the Kevlar midrange driver in the 802D's tend to have a very noticeable midrange coloration. Not familiar with the sound of your Levinson amp. Finally, I'm quite certain the Sony SCD-1 uses electrolytic capacitors in the output stage that I have found to sound harsh in similiar Japanese cd players. Sorry for the negative comments but we all are only trying to help you out.
Good Luck
Good Luck