@steakster Yes my milage did vary. Best power cables I have in my system are the 2 C-Marc EP in my digital front end with the LessLoss Firewire 640x on my DAC (LessLoss) and my Innuos Zenith MKIII. Using DH Labs USB and Zavfino Silver Dart Graphene Audio Interconnect (XLR) from dac to pre and pre to mono blocks. I do not have any LessLoss Interconnects.
As I have both Digital and Analog front ends there is DH Labs and MELCO ethernet cables feeding the signal through the TeraDak T-S212, DH Labs USB feeding from Innuos to LessLoss DAC with Wyred4Sound USB ISO. Clear detailed not analytical or sterile sounding at all. Analog is all DH Labs BL-1 phono cable and Silver Pulse cryo-treated, unshielded hybrid cable from the phono pre to my pre amp.
I have 2 SR PC in my system but they may be the cables on the block for replacement, powering my mono blocks.