Hey MTerry,
I agree that the brick is a great sounding pre. That said, I think the tapes would honestly be better without the ad2k+...just my 2 cents though, as I can't stand the ad2k. Maybe run m148->mini-me if you have the cash...I bet those would be sweet tapes, although a more transparent a/d might be of more benefit with the transformer design of the m148. Those things are exspensive too, and I believe the waiting period on one is like 6 months or so.
Daryan