Ok. I just got my new receiver yesterday (HK AVR 630) and I was only to really test everything out tonight.
Matrix- scene 29. Between my AR Master Optical and my Black Rhodium Rhythm Coaxial.
The AR Master Optical sound quite a bit better. The highs were clearer, brighter(not too bright though), and seemed smoother through the high/mid transitions.
This was the first time that I was able to really test my 2 cables together.
I am actually bummed that my new Black Rhodium didnt blow me out of my seat! I just bought it before I got my receiver.
So I just hooked up my Black Rhodium to my VCR (video), and the picture is clearer.
So my say is this. I have always used AR Master cables, and I have always been happy. I use them for everything; component, optical, dvd-a, turntable, subwoofer, etc...
No complaints.
Scott.