Anyway to try and expose the apparent sound staging I listened to Factory Girl from Beggars Banquet by Rolling Stones. I picked this track because it has a strong spatial effect due to manipulating stereo. Listening to this I realized that the "shift" in soundstage I experienced is due to one of the cable sets being cross-wired. Honestly it doesn't look there's much a difference between the AE and Mogami cables in place. I'll need to test further, perhaps not with rapid A/B testing which might be messing up my audio perception.
I also have a set of Audio Sensibility cables connecting pre to amp. I'll figure out how to test those as well.
Source: custom audio server, linear power supply, Paul Pang v3 USB card + external battery supply. SSD power isolated with splitter cable to another battery. Windows 10, Fidelizer Pro, Roon. All fanless. CD player when the batteries are charging.
DAC: Schiit Yggdrasil Analog 2 + Unison USB (Supra USB cable and optical for CD player).
Pre: Yaqin B-2T + Herbie tube dampeners, all NOS. Both DAC and pre plugged into a Chinese balanced isolation transformer. Audio Sensibility power cables to devices, transformer is plugged into a Furutech outlet with a AE power cable.
Amp: VTV Purifi, currently burning in but I think it's about done. Old Odyssey Stratos standing by, Odyssey Kismet coming in. LessLoss level 1 power-filtering cable (not the C-Marc) with a LessLoss Firewall x64, plugged directly into a Furutech outlet.
Speakers: ProAc D30R + Audio Sensibility cables + matching jumpers.