Thank you for the compliments and I'm glad the review inspired change and experimentation in your own system. 1) The BNC output of the Lumin S1 is superb and worked wonderfully with other DACs (MSB Analog, La Scala, etc). It's only with the DAVE/TT I found the BNC input to be inferior to the optical/USB. 2) Completely agree. From my experience, the P10 did a fantastic job of isolation, even with headphone amps attached to the high-current ports. Some say the P10 sucks the dynamics and low-end out of the sound but after plenty of A/B'ing, it helped my setup enormously. Night & day.