I got into 2 box source when I tried a DAC with my old CD player. It sounded much better--so I bought it. Then the player completely died--so I bought a transport. Later I upgraded to a better DAC, and then again to a better transport. I now own a Mark Levinson #37 and #36. Does it sound any better than a #39? Probably not much--but I do have the option of upgrading the 36 to a 360S. If you can find a single box that you are happy with (and will be for a long time)--that probably makes more sense and is more cost effective. However, if you like to upgrade and change things--the separates provides that flexibility.
