Tube preamp question

Hello all,
I've recently been looking to possibly add a nice tube preamp to use with my spectron musician ii (hybrid upgrade/no V cap upgrade) monos and Anthony Gallo ref 3.1 speakers. I am currently using a Lexicon MC-12B preamp, bybee power filters with wireworld power cables, cardas balanced xlr and spectron remote sense cables. (I am also using lexicon rt-10 universal player and Oppo bdp 103). I love the Lexicon preamp and mostly watch movies but have been more and more appreciating music on my system. I'd love to add the warmth of a tube preamp but is there anyway to use both or would a tube buffer between the universal player and preamp be the way to go (a happy medium). Basically I want to use the Lexicon for movies and a tube preamp for mostly 2ch music. Is there any way to "pass through" the lexicon and use a tube preamp when I want to listed to the tubes?
I would also need a balanced tube preamp due to the fact the spectrons must be changed internally from balanced/unbalanced.
Any help/input/ideas would be very greatly appreciated as always