Psychicanimal- No, I am not one of those that "have to have the best." I chose components for their performance, not their price tag. The same holds true with cabling, as well as the RSA in MY system. I actually talked to Robert about this, as he also felt there was either a impedance or capacitance (don't recall which) issue between the preamp and the amp perhaps. He also offered to make another cable to correct the situation and send it out right away. Robert and his cables are first rate. I truly wish there were more companies like his! However, with that being said I made the post due to letting others know there is always something to be said for system matching. Most of the time system synergy comes into play when you least expect it.
I was not just going off on a tangent about RSA. I spoke with many on the cable interaction... from the manufacturer of equipment, to the Cable Company, who keeps track of systems and what works well with some speaker lines. For expample - from what I was told there are several dozen speakers out there that do not mate well with silver. Silver. Not RSA, but any silver cable. I wasn't trying to knock RSA, but to inform others that some speakers will react better to some cables than other. I don't chose cables to be a "tuning device" and that is what attracted me to Ridge Street Audio. I chose components on performance. In this particular case there was a mismatch somewhere. I was told that in particular Meadowlark speakers don't mate well with silver. Is that a fact? I don't know. Do I know how it sounded? Yes - the Ridge Street Audio Poiema's in my system sounded as if one speaker were wired out of phase. It was not "noise" or "digital glare" as you mentioned in your post. It was a compressed soundstage, and a prominant "reverb" in harmonics when there was a complex passage in the music.
As for copper cables quieter, again I don't know. I am not proposing them. If you take the time to look at my system I can assure you I don't have system "noise." Since the insertion of the Balanced Power Technologies BPT-3.5 Signature the background is dead quiet. Again, if you look at my system, I use an Electrocompaniet EMC-1UP for digital front end, many, many users here on A'gon will attest to this being one of the most analog sounding cd players out there! "digital glare?" - don't think so from there. Perhaps the Quicksilver tube gear or the Meadowlarks are inherently producing the noise or glare? Don't think so, as you can hear a pin drop now. Why? I can't say. I didn't purchase the "best" cabling from Synergistic Research but again basing on how I personally judge gear, by its performance, there is no comparison - and I will state again in my system. I won't necessarily take a back seat to the Synergistic Research being berated or saying it is rolled off... I actually think it is a copper silver combo, I don't know. I didn't ask. If they didn't work extremely well - I wouldn't keep them in my system either. As you would say, it is not fair to blame poor electricity and digital glare if there is none. In my experience, in my system, it was the silver cables that caused the sonic problems.
Again my point was system matching is a factor. If you have the ability to "borrow" 3 or 4 manufacturers cables form a company such as the Cable Company I encourage you to along with the Poiema's! Listen for yourself, in your system.
Neither the Ridge Street Audio Poiema's or the Synergistic Research Resolution Reference X2 are inexspensive. With the amount it cost me to biwire, and run two pair of interconnect would equal in most cases the cost of a component. The sonic differences between the two were not subtle, and were substantial. I don't have a money tree in my back yard, and I assume most others work hard to earn their money as well as permission from the wife... so when you are at the point to drop that amount of money on cabling I would suggest trying a few different cables in that price range and make an educated decision for yourself, in your system. There can be major sonic differences.
Happy listening!