I agree with the suggestion of the Classe' DAC-1. Also may want to consider a Cal Alpha. Although I have not heard the Alpha/CL-10 combination, I have been told that it is a big improvement over a stand-alone CL-10. I am currently using a Theta Pro Gen Va with a CL-10 and the results are outstanding, especially on vocals. However, a used Theta is about $1,500.
Good Luck
Good Luck