DAC Suggestions Please


I currently have two DACs in my system which are internal to other components.  My front end is an OPPO 105 and my pre-amp is a Classe Sigma SSP.  What recommendations do any of you have to improve my DAC performance.  What price point should I be looking at to really improve everything.  Thanks very much for any suggestions.

rob


taylorro
Thanks for all the input. Here is additional info on my set up. Speakers are Revel Ultima Studio2. Amp and preamp are Parasound P7 and JC1 monoblocks. My sources are primarily red book cd, FLAC files from my Oppo 105 and vinyl. I listen to a lot of progressive rock, female vocals, some jazz, bluegrass, limited country, and some big band. 
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taylorro
  My sources are primarily red book cd

Then stick with R2R Multibit dacs, the best for doing PCM (RedBook), discrete new ones or new old stock.
 Shiit Yggdrasill is a good nos new one, but make sure it's the latest "B" (mkII) version.
http://www.schiit.com/products/yggdrasil
Cheers George  
Ok, I'm a little confused.  Do you use the Classe SSP for processing only and feed that into the P7?  Why two preamps in the first place? I must be missing something here. 
Sorry about that. I have replaced the P7 with the Classe for its multi channel application.