Novice requesting preamp options

--Preamp recommendation?--

So I hate to through out such a general question but am really new to higher end audio and hoping to get some guidance.
Recently I've come into some reasonable speakers and an amp.  I want to take this chance to change my listening experience.  Here are the givens so far (and it's not much, the slate is semi clean):
-- A 5 year old "Peter Gunn" modded pair of Magnepan 1.6's
-- A 7 year old Butler TDB 2250 amp
-- A listening room of approx 20' x 24' with 12' ceilings.  The room is too live and needs work.
This is all I currently have.

I'm looking for a preamp recommendation.  My price range is up to $1500-$1600.

I don't have a CD player yet (a good one anyway) so am continuing to keep my eye out.
I initially plan to play CD's but am trying to educate myself on digital ie a quality music server and stand alone DAC as I think this may be an option later on.  ....But I'm finding myself kind of overwhelmed with all the info out there on digital and think it'll be a while before I even understand what questions to ask.
Thanks for your help.
Andrew