Fplanner2000, The HiDiamond has a little wider and deeper soundstage than the SR Apex.
But, like I previously mentioned the HiDiamond XLR sounded more "lively". Once I exchanged the cables and heard the liveliness, there really was no going back.
I have placed the Audience aRp2-TO units on the floor and I have a power cord connecting them to the wall. I am doing this because the Audience unit's are huge and is just too big to just plug into the wall outlet because it overlaps the double outlet wall outlet.
Right now, I have another SR Precision Ref power cord from the wall connecting to my Audience that powers my digital.
On the Analog side, I have the same set up ,except, I have a HD P3 from the wall connecting to the Audience.
So, my plan with the new HD P4 is to replace the SR Precison power cord with the HD P4 and either sell or use the SR power cable on my Denon home theater equipment.
I will eventually get another P-4 for my other dedicated line/Audience as soon as I rob another bank...
Happy New Year!