Thanks for the comments.
I used the analog signal from both the CDP and the Squeezebox. I don't know if they had CDPs with digital out back then; I guess probably, but this is low end Kenwood player.

As for the comparisions, I only do blind comparisons when I think I can hear a difference. I didn't do that here since they sounded the same to me. Another test I did was to compare monster wire to some thinner stuff. Again, I couldn't tell the difference. I think part of the problem is I'm not in an ideal listening environment and part is I don't have the ears for it.

I am agonizing between the RB15s and the Diamond 9.1s.

-mark