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

Showing 11 responses by zd542

Another reason for you not hearing a difference is that you may have bought a new cable that is similar to your old ones. What did you buy?
"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.
Mcintosh, while being very well made, isn't the most detailed equipment that you can buy. It wouldn't be my first choice to do a cable shootout with. And that's not necessarily a bad thing. Sometimes the more detailed gear can drive you crazy.

Looking at the cables you tried, the AQ, Morrow, Audience are all solid core copper designs. Not that they should all sound the same, but you can expect some similarities between them. 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. You should here some differences in those areas. Also, pay attention to image size, or scale. The difference may not be big, but there's usually a difference to be heard changing from stranded to solid core.

Sometimes when dealing with products like cables, that don't always make a big difference, you just need to focus and hear it that first time. Once you hear something for the first time, its usually much easier to keep hearing the same type of thing, again and again.
Tests like that are not conclusive. There's just way too many variables in play. Also, I question the salesman's claim about not being able to hear a difference. There's people that hate high end audio so much, they make stuff up.
It doesn't matter what you say, he'll never change his position. Its not about cables, its about him being right. Give him all the proof you want, and he'll come up some excuse, no matter how small, to invalidate whatever it is you show him. Here's an example.

Gorquin. Here's a white paper on Audioquest's DBS system. It goes over what break in is, and what it is not. You'll also see the patent number AQ has on this system.

http://www.audioquest.com/wp-content/uploads/2011/12/DBS.pdf
Thanks for referencing the audioholics articles. I know it well and was about to list it myself. In it, they call the DBS system snake oil, and follow up with some scientific info as to why the DBS will make no difference. I see a couple of problems with their argument.

The main issue is simply this: If you read through the articles carefully, you'll see that not 1 of the skeptics so much as laid a finger on a DBS cable. How can anyone make a conclusive statement on the system without actually using it first to see if it works or not? Its silly. In order to claim science, you need to do something scientific. If they would have tried some of the AQ cables and didn't hear a difference, I can respect that. But they're not interested in the truth, they're more concerned about winning the argument.

The other major thing that stands out in the article, is that they're challenging AQ to send them some cables to demo. To me, that sounds like they are afraid that they may be wrong. I say this because if these people wanted to conduct a test of the DBS system, they could easily do so at any time. You don't need AQ to do that. DBS cables are sold in Best Buy. They can buy a pair, test them and then return the cables if they are not happy with the results. What could be easier? That's what most of us here do if we are considering new gear. We demo it. The skeptics can do it too, but they choose not to. I wonder why.
"With this setup the OP and friends might hear some differences, with various cables. If they still cannot hear the differences, then they should simply pursue economical cables and be happy. :)
Douglas_schroeder (System | Reviews | Threads | Answers | This Thread)"

Not necessarily. That test has some serious flaws. The first is the splitter itself. Depending on how well its made, it could rob the system of detail that would normally be there without the splitter. Also, since cables are system dependent, the splitter will match up differently with with each cable. Cable A may match up with the splitter "better" than cable B. And you'll have to double up on the runs because the splitter is in the way.

More importantly, though, testing a cable using this method won't allow allow you to hear any spacial information. To see how well a cable images, you need to be listening in stereo. Scale/image size, and how forward/distant the presentation is, can't be determined either.
"Another approach is to consume alcohol or drugs or both."

Sometimes that does more harm than good. Like the time when I cooked an egg on top of my Class A Pass amp. I didn't let it warm up enough, and I forgot to melt some butter on it first, like I normally do. I don't know how many hours I spent cleaning those heat sinks out.
"10-21-15: Aintitgr8
Cable questions of the profound "what is the meaning of cable" are always entertaining by right of how many clueless people are going to give you their profoundly ignorant and useless advice. Unfortunately far too many dealers and "experts" will give you advice that is almost as useless."

Lets see where you fit in. If neutral cables are so important, define them. How do I know cable A is more neutral than cable B?
"By definition neutral cable would be an absence of coloration, distortion, or imbalance of the complete tonal range. Anything that affects any tonal element differently than it does the rest is going to throw off the tonal balance."

Great. But like I asked you before: "If neutral cables are so important, define them. How do I know cable A is more neutral than cable B?"

Give us an example of a cable that you know is neutral. And not just because you say so. Prove it. All of the differences that you've listed in this thread, and your other one, can easily be explained by the interactions of the components themselves, and not the cables. Cables make a difference, but active components make bigger differences. (Yes, I understand that there may be the occasional exception, as there always is.). With all your talk, you make it sound like the components don't have anything to do with how the system sounds.