I'll second just about everything Gunbei said. I used DH Labs cables for a while and they can be a bit on the zippy side. You might try JPS Labs Ultraconductors or maybe even Acoustic Zen if you can find some used Satoris and/or Matrix Reference interconnects. Anyway, I'd try the cables first and the Bel Canto DAC second if the cables don't do it for you. Best of luck.
Tim
Tim