Thanks everyone for your input! After listening for several hours last night both ways, I think timm is correct. The sound is more warm and much fuller with the preamp, might be due to the tubes. Bernard made a good point if I do ever replace the DAC, I will have to get another pre. ITS STAYING!
I was hoping to get some advice to determine if I should keep my Primaluna Dialogue Three Preamplifier. I have used to have my TT, SACD player, and DAC all though the pre however I have sold the TT and SACD player and only using the DAC and don't think I will ever go back to those other sources...