I wonder if anyone would care to explain this to me, perhaps the "old" TMA staff? My long awaited DP finally arrived and comparing it to my SP, without switching TMREQ on (cos I have yet to completely figure out how to do it) I find that the sound quality is better from the DP than SP. Is this possible or am I just imagining it? I was under the impression that the same 192kHz DACs are used in both and I presume the same hardware bits other than the extra processor for the DP? Although the software is 4.31 in the DP and 3.8 in the SP, I thought the differences were related to the extra TMREQ related processing rather than the fundamental AD-DAC algorithms?