Dave,
I’m amazed at how good they sound new. Will be putting on more hours over the next few days. Was curious about device noise last night and was looking for my EMF detector, but I can’t find it...oh well
I’m pleased that you like them.
When I listened to every commercial receptacle that I could to replace the P&S 5362 Spec Grades that were in the first iteration of the Uber I was amazed at just how “right” the 5362A sounded when compared to the Hubbell, Cooper and other hospital (MRI) grade receptacles. There was an undeniable improvement in the very low and very high frequencies. Taughter, but deeper and cleaner in the highs. My benchmarks are female vocals, brass, cymbal harmonic series and a good old Fender P-Bass. Another is the release of notes and reverb tails (room sounds). Again, the 5362A had a rightness to all of these.
I had heard the difference between unpolished and polished connectors when I started polishing the blades on Wattgate plugs for my power cables. Polishing lowers the noise floor which is apparent in higher frequencies. That is when I started offering polished 5362As as an option. That was a good start.
I use a material in the RFI ‘Brick’ absorber in the Uber and started experimenting with compounding that with a viscoelastic material to damp vibrations and mass load the receptacle. This took a year to finalize with well over a dozen different prototypes before I was happy.
Graphene was the frosting on the cake.
I AM happy. Even so, I’m trying new mods... TBC >>>>>>>>>>>>
One thing needs to be known. I have been asked about the fact that I remove the steel pins from the back of the receptacle. These serve to locate the brass frame on the receptacle. They do not really hold the receptacle together. They are used to insure that during the automated ear folding process the pieces stay in place. It is the folded ears that provide mechanical integrity. They sound better without the pins due to the elimination of ferrous eddy currents.
I have retired the Furutech GTX NCFs in my own system.
Enjoy