Thanks, I knew it was a U*W-10 sub of some sort! I was surprised to see they integrated it in. I have one of the SOS standalone units. Got it when it first came out, introductory sale of $250.00 . I could hear the difference, but haven't sat down to measure it yet. I do have TrueRTA on my laptop. Guess I just need to kick everyone out of the house for awhile to do some testing! I just didn't have the room to put that BFD into. Plus, it wasn't really made for home use either.