I have never used either of these two units. But what is interesting about the ART Tube MP is that a lot of the posts I see about it aren't exactly stellar. It gets some good comments about it's ability to act as a direct input for bass, but then gets slammed by many others for its sound on other instruments. I avoided it because of this inconsistency, and went with the audio buddy, which to my ears is ok, but nothing special. I would imagine from what I have read, that overall, the DMP 2 would be the better buy.