This is an interesting coincidence, because I had a ruby that I was stuck with when a dishonest dealer would not take it back from an audition (a rare occurance). I tried it for a phono cable and found it to work extremely well, evan outperforming a lot of more expensive cables made for phono (another rare occurance, as I didn't really think it was that great in other applications, and it is not a "phono" cable). Then, when I upgraded my phono stage, I then used it for the phono to preamp ic, and it worked so well it lasted longer than any other cable in my system, including cartridge, arm, phono stage, and ic's for the entire system.
Anyway, to make a long story short (too late), I would try the ruby for your phono application. It may outperform many more expensive cables in your system as it did for me, as well as give you something to campare to. Also, what I did was upgrade My phono stage and put it right next to my turntable, where I have my tonearm wire directly plugged into it, eliminating the phono cable altogether. There are also a lot of tonearms that come with the tonearm wire long enough to reach the pre, eliminating the connections of adding a cable. If you think about it this way, perhaps the money you spend on a phono cable could be placed elsewhere to bring you to a higher level.
Anyway, to make a long story short (too late), I would try the ruby for your phono application. It may outperform many more expensive cables in your system as it did for me, as well as give you something to campare to. Also, what I did was upgrade My phono stage and put it right next to my turntable, where I have my tonearm wire directly plugged into it, eliminating the phono cable altogether. There are also a lot of tonearms that come with the tonearm wire long enough to reach the pre, eliminating the connections of adding a cable. If you think about it this way, perhaps the money you spend on a phono cable could be placed elsewhere to bring you to a higher level.