Ok, I understand your point about the wall warts being the weak link. I spoke with Chords North American Distributor. I have two key pieces from Chord, the Hugo TT2 DAC and the M Scaler. They were adamant about not replacing their wall wart with a LPS. I am not sure why... Their response was that the entire power system was designed to be what it is and any change will have a negative impact on performance. Any advice?