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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
nonoise's avatar
nonoise
10,540 posts
 
I'm of the camp that thinks ICs are the most important, particularly from source to amp. Throw in separates and I'd suggest staying with the same ICs. If you're going to throw money at something, do it with the ICs.

I also agree that it makes choosing a SC all the more easier as you don't need to spend insane amounts of money to get great results. Once I settled on the best ICs I could get for my system, I discovered SCs that went for $15/ft. that smoked anything else I had in my (small) inventory.

It made a believer out of me of the importance of getting it right upstream first. As for PCs, I'm tempted to try something else but seriously doubt I could better my present set up without spending more than I'd like.

All the best,
Nonoise
zd542
5,339 posts
 
"07-07-15: Mitch2
In my experience, a longer term audition is better than a quick A/B comparison. I have found that by leaving one cable in your system for a longer period (at least two weeks to a month), and then swapping it out with the comparison cable provides a better indication of which cable you will enjoy long-term. Because of the “new factor,” we are sometimes drawn to something that is new and/or different, so this longer term comparison is a more reliable comparison method, to me."

I agree. That's really the other half of the equation. There are things that I need to listen for when doing a quick A-B test like we were talking about above. But the final test is to leave the cables in the system for a longer period of time. You'll notice just as many differences between cables when you are NOT listening for changes.
macdadtexas
1,794 posts
 
years ago when I first got into this hobby, I went cable crazy. bought and tested bunch of different cables used through audiogon, and I can't remember the name of that used cable site (?) they are super helpful there.

I could tell a difference in interconnects for sure, and speaker cables to my then big Maggie 3.6's. I could hear nothing at all in the way of difference from power cables to any of the equipment.

Nothing over the basic upgrade sounded any "better" to me in the way of I/C's or Speaker cables. For a long time I used Kimber Hero's and Zu Libec speaker cables. I only recently switched to all AntiCables. I've always used Signal Cable power cords.

So, I'm not surprised you hear no differece.
coli
291 posts
 
If you can't tell the difference, then you don't need to change cables :) Try A/B cheap cables and see if you can hear a difference.
williewonka
3,063 posts
 
Almandog - did you allow the new cables sufficient time to "burn-in"

The KLE Innovations gZero cables I am currently using took over 300 hours to sound anywhere near their best - in fact they are still getting better. Having said that they blew the doors off the old cables - IC's and speaker - right off the bat, so it was not difficult to appreciate the improvements.

Even once burn-in is complete, if you disconnect them and reconnect them, some cables may require time to "settle" or "re-seat".

Sounds bloody crazy, but again, my KLE Innovations gzero cables require up to 60 hours to settle if disconnected, before they perform there best

As to which should you upgrade first - I try to get the speaker cables sorted first and then deal with interconnects, because as another poster pointed out - downstream cables could be the bottleneck.

Hope that helps :-)
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