Replacing generic RECEPTACLES

Rhodium is often frustrating to use. I think you will hear it settle in but it may take 3 - 10 - or 14 days. I appreciate your efforts and your reports.
I have had positive results with coating the connecting wires with the Total Contact by Perfect Technologies. It seems to “tame” some of the harshness of rhodium.
Best wishes for a good weekend.

David Pritchard

The odd frequency thing has cleared up. The duplex definitely offer greater clarity in the music playing on my system.I am thinking of replacing some of the wiring in the Furman going to 12 gauge MilSpec Teflon 600V  wire. It would ease the tightness, remove a bunch of crimped on AC connectors at the duplex end.(Cutting the connectors off as is would leave the wiring to short to work. The wiring is that tightly fitted.) The wiring comes from the transformer to a long old fashioned connecting bar (with dividers and twin sets of screws) So aside from tedious untangling the harness from each duplex to the bar, looks straight forward.)The last group of Duplex has arrived. I have enough to cover every outlet throughout the system, including all in power conditioners.

Exciting developments. I am confident your system will only improve over the next 4 to 6 weeks. I applaud your hard work and drive to improve your system.

David Pritchard

With about half the Duplex I bought in the system, I an say they are improving the sound.                        
I moved the Plasma TV to the Furman REF20i Furutech outlet with the NCF rhodium. eye popping improvement in less (Meaning no grain at all) grain in the picture. A few black and white films being played (over the air) were much sharper than they seem usually.             
It is nice to have a different medium show the improvement.

Update on progress installing Furutech duplex. I removed the gold GTX from the 20amp wall and replaced it with a GTX Rhodium NCF.Seems the closer to AC end 'like' the Rhodium NCF, and the component ends like the gold GTX. (Though I have the Rhodium to the amp duplex anyway. But all the rest, particularly sources, seem to sound better when the duplex is the gold GTX (than the Rhodium)I am still 'up in the air' for preamps, since I do not have a Rhodium set to try it on them yet.         
I put a Rhodium in the Furman Technical power area, but is does no good there. So my future plan is to move it to the Poweramp 120V/0v side of the Furman. And just keep gold GTX on the technical power 60v/60v side for sources. Then I can find out how well the Rhodium NCF compares to the GTX gold in the 120v/0v power section of the Furman.. on the preamps.  (that section has space for 2 duplex)     
I own and use Bryston BP-26, Conrad Johnson ACT2, Audible Illusions 3A, and an Audio Research Sp-15.   Right no they are on the GTX gold (Bryston and CJ), or the stock 120V duplex left in the Furman   (ARC and AI)  
The general system sound adding the Furutech is clearer, more detail. Better
pop' more snap to the music. A slight irritation seems to be gone. It was more like an extra enhancement to the treble than any sort of grunge. More HF energy then normal before break in. But that is passing. 
I would say the first few Furutech duplex made the most change. The added ones are more like smaller enhancements.
The change is kind of like a couple of better ICs or powercord..