Accuphase DP67 + DAC

Hello. I own an Accuphase DP-67 CDP. Apart from listening to cd's, I also use it in order to enjoy lossless files with my pc via an M2Tech hiFace interface and an optical cable into the Accuphase. The sound is very good. No complaints.

I was just wondering whether an external DAC would materially benefit the sound of the Accuphase (which would be used as a transport only for cds)? If so, what dac would you recommend?

Looking for more detailed and dynamic sound.

Tooo much money to spend to upgrade DP67. You can get separate DAC for PC though.