HiDiamond Power cords...

Kzhtoo, I think whichever position you place the P4, when all is said you may have P4's on everything as I do. Your soundstage will expand with greater detail and depth, quieter background, extension and isolation. I couldn't imagine if say a P5 was made what it could achieve more than this cord can......Happy listening.

Thank you for all the info, guys. Second P4 is now on the Pass pre-amp (another P4 is from wall to power regenerator), the improvement is not subtle at all. Feel like a very worthwhile improvement. I ordered a set of D8 speaker cables also and will arrive in about 2 weeks.

Kzhtoo,
Congratulations on the purchase od the D8 speaker cables. Just remember all of the HiDiamond products have a long break in time.

This forum goes way back, but if still interested I would say with no doubt that the HiDiamond Power cable Diamon 4 is the best they have ever designed.
We are their dealers, this one we introduce and sell. Cable with 4VRC© proprietary technology, copper cooking four times in order to obtain a reduction of the values of inductance, capacitance and resistance mixed with graphite. The best Carbon Fiber connectors and contacts in Plating Silver to ensure maximum energy transfer

Kzhtoo, I am pretty sure the HD D8 is a big step up from the NordOst Frey (is that what you use currently?). Not familiar with the Frey but having (had) Valhalla IC, some mid range NordOst SC and still a bunch of Valhalla PC which is IME the fastest kid in town, the D8 will nicely complement the P4s.

Tympani, I am very tempted to buy more P4s but will do so after a shoot out with LessLoss DFPC Ref that I just bought and maybe a Silent Source Musical Ref. Did you try any of the above mentioned ones?