I agree the Arcam is a terrific player! I've spent a lot of time with one myself. I also agree you'll get a different sound with the DAC. Whether you like it will depend on your taste. I've put my $350 Audio Sector DAC up against the Arcam DV27. The owner and I both prefered the DAC over the player. We used the Arcam as a transport. The Dac was more fluid and natural than the players analog outputs IMHO. Also there was just more definition and focus between acoustic instruments. So cost isn't an issue..it is the design of the product. FWIW.. the commercial version of the DAC does retail around $1200.
Good Luck
Good Luck