1st off: Williams system simply images and layers. Pin point accurate. Really good sweet spot. Did have some issues with a channel due to some cabling but that was sorted out post haste.
I brought a 100 foot ribbon style CAT6 that was ~$13 delivered from Amazon, Cisco SG 200-08, BJC 3 meter 6a, Emotiva DC-1.
We did both sighted and blinded evaluation of the 5 meter DIY vs the 30 meter machined. Honestly I couldn't hear a difference on either his laptop or mine. William thought his laptop was more sensitive to cabling and I believe he thought mine was nullifying any cable differences or making any changes so minute as to being immaterial.
On the blinded evaluation it was 6 of 10 correct. He did some switching blind for me and I was simply guessing.
For me there was no real ahah! moment. If we spent 30 seconds without music playing, and regardless of cable used, when resumed it always sounded the best and then immediately looping the playback would diminish. Wait another 30 - 60 seconds and the first playback always sounded best. I think it's like any endeavor, you tend to do best after a bit of a break.
William liked the DC-1 DAC. His Wadia 121 is nice and I REALLY liked the remote for it. Pure sit in your chair convenience.
Just wanted to again say thanks to William for the terrific hospitality and it was a blast. If anyone else bumps into William out and about: Ask him about his rock collection ;-)