Send me a PM and we can discuss the N3 and portable pairings. As for the R2R-11 and USB cables, I've never been convinced, although I do have an ifi iSilencer 3 that I picked up a while back as part of a deal, which probably keeps even the most basic USB cable dead silent for much less money than one of those fancy cables and blocking power pins. To be honest I can't tell the difference between the stock USB cable with and without the iSilencer from my Mac, hence my skepticism. I am yet to read one convincing post anywhere that describes, in real, understandable language, the actual differences (and degree of differences) between good and 'bad' USB cables - as in, for example, "on this song at this point, with the stock USB the vocals are notably smoothed out and lacking definition compared to USB cable X". Until someone can actually put a finger on the quantitative and qualitative differences with real world examples, I'll continue calling BS.