I believe that a Timbre TT-1 or Adcom 700 DAC {believe that is the model #},would make improvements.Can't comment on the Birdland,but it is warrantied.You might read the TAS review of the Birdland to get an idea.
Best Inexpensive DAC
In the last 12 months I have mananged to purchase a used ML27.5, used ML38S and a new pair of Thiel 2.4. I am broke, but I can't stand listening to my old Denon CD player form 1992. I do have a coax digital out on the unit, so I thought of purchasing an interim inexpensive DAC to get me by until I can get something a little better. Any suggestions?