An update at the 300 hour mark.
I have been away for about week. The power amp power cable was been cooking on the amp while away, as my amp stays on 24/7. Came home and listened to the system.
The cable is really settling nicely. At first listen however, I thought it sounded a little dull, and was worried. Upon further listening I realized, that it wasn't dull at all. but finally the sound of real Instruments. The high frequency hash that afflicts so many systems, the hash that many of us accidentally think is detail, is gone. Now that that's gone, the REAL detail, is improved, and there, but not overblown, only on the edges where it belongs. It's a much more sophisticated presentation.
The showstopper difference after 300 hours, is the incredibly palpable and holographic image. The cable has also fleshed out considerably!!! I would have to agree with oregonpapa, as these cables just keep improving and improving, the sky seemingly being the limit. I continually have better listening sessions each time.
Now honestly, the power amp cable in my case made the biggest improvement, and I'm so glad I got it... It's been the real game changer. Just goes to show you that you can upgrade so many other cables in the system, but are still bottlenecked at the end of the chain if you don't respect the power amp. Know we say, start at the source, but make no mistake, the power amp needs love too. The stock cable had a noticable glare by comparison.
The systems sound is really explosive and engaging. Having ARC and Maggie's are a great synergy, and the SR power cables are right at home with these components, and the all flatter each other. I'd bet they are right at home with other equipment too, but I have no personal experience other than my own setup. I've been in this hobby for over 20 years, and I've never had such a spurt of improvement as I have over the last couple months with these SR products. I realize now, that my system, while good has been sophmoric.....until now.