A-B testing of cables


I recently attended The Show in Newport Beach California, and I asked some experts how to upgrade my cables gradually. I was told to start at the source. I should upgrade the source interconnect first then gradually work my way through the system, and I should hear the difference at each stage providing I am using audiophile quality cables; so I bought some cables at over $600 a pair to try out. My current cables cost $250 a pair.
My system is composed of:
McIntosh C2500 preamp
McIntosh 601 mono blocks
McIntosh mcd 205 CD player
VPI Classic 3 turntable
Nola Baby Grand speakers

I bought two y adapters and connected one pair of new cable and old cable between the CD player and preamp to do an A-B test. I also performed the same test with the turntable but I could not tell the difference between the cables whatsoever. I was very surprised and disappointed at the same time. I could not believe it so I called in others to have a listen whithout telling them what I was doing and they too could not tell the difference.

Has anyone else tried this test? I would like to hear your results.
Am I doing something wrong?

What is your experience in doing A-B testing of interconnects?
almandog
Missed the =. Link here[urlhttp://www.roger-russell.com/truth/truth.htm#truthandsuper]here[/url].
The advice to start at the source assumes that the old cables further downstream are not "bottlenecking" your system. If they in fact are, any (possible) improvement upstream may be masked by them. Shunyata recommends auditioning their power cables by temporarily using them system wide, to get the cumulative effect, warning that changing only one cord may not be indicative of the improvement possible with their product. All that takes is a willing dealer!
A more expensive cable doe not always mean better sound. i have found starting at the source is good, but then i do the speaker cables before doing the interconnect between the pre amp. also changing out the power cords is a good way to get a better sound.
enjoy Pete
If you're trying to hear a difference take one of the solid core cables and put it next to the Straight Wire. When you listen, play something well recorded that has a singer and just one or a few instruments, like a piano or an acoustic guitar. Closely miced recordings like this present a lot of detail and it makes it much easier to hear small differences. Listen to the high frequencies, like cymbals and vocal sibilance.
+1 ZD I just recently upgraded my speaker cables and didn't think I heard very much difference. That was until I put one of each cable in. At that point the difference was very noticeable.