Most Beneficial Cable Upgrade


All things being equal, which cable upgrade would have the greatest sonic impact/improvement on a high end audio (stereo) system?
1)Power cables
2)Speaker cables
3)Interconnects
I have heard that power cables have the greatest benefit due to their ability to reduce RFI (radio frequency interference).
Does anyone know the answer to this question?
matjet
The power cord thing is confusing. I just installed a set of DIY power cords on my power conditioner, amp, preamp and D/A. The cords use CryoParts CryroMax3 cable and low-end Furutech connectors. Parts costs is about $150/each which roughly equates to a $500-600 production cable. Each cable also has a Versalabs Red Roller at the IEC end. These cables were a switch from the Discovery Cable power cord, an entry level type product.

I initially installed a single cable feeding the PS Audio P600 power regenerator. The effect was subtle, but positive enough to make me want to go further. I then installed them on all the electronics listed above. The audio effect was definitely less subtle than adding the single cable, but still subtle. That said, I think the power cord switch was the best $600 I've ever spent on the system. The overall effect is totally positive, an improvement in all sonic areas.

But this is where the confusion comes in. I don't know what actually causes the sonic changes I hear. Is it the power cord? Is it the cord's Furutech connectors? The Red Rollers? Could it simply be the physically tighter connection the Furutechs make as opposed to the purity of the copper and polished gold plating? Maybe it's the way I positioned the cables differently due to different flexibility. Might it have nothing to do with the power cords themselves, but simply plugging them in and out several times removed a layer of oxide on the connectors. I could go on further, but I think I've made my point. Even inserting a device as simple as a power cord, and they are simple devices, introduces a relatively large number of variables to be considered.

Then you could also add price/value to the equation. I only spent $600 for the whole system. If I had spent $2,000+ would I hear differently? Or might be I have it backwards and it's the fact that I think I've scored a bargained is influencing my hearing? Like I said, it's confusing.
i know because i can hear. i understand music.i have been a industry professional since 1975 with many systems. i listen for a week or so and don,t just switch back and forth. i don,t have a team of roadies to make the switches and run a/b tests. i don,t plan on installing a soniclly transparent curtain in my living room. that is how i know. has anyone here done all this? come on,,if it sounds better trust your ears. if it doesn,t just go buy some ht theatre stuff, drink up and listen in the dark and give up. why buy sophisticated gear if you can't hear a difference?
Matjet quote:

"How do you know that the improved sound that you perceive by installing the beautifully crafted, expensive, highly regarded after market brand name power cable is not psychological (placebo) unless you can identify it blindly?

I find testing/comparing speaker cable a pain in the neck. Lots of disconnecting, reconnecting, moving things, it is an effort. Testing power cables is less work, much easier to switch. I will do some testing within the next couple of weeks."

this is why I suggested the recording option in my earlier post here on 01_22.
I believe Wireworld produced a cable comparison cd around 8 years ago.

But I wonder why this method has not been tried since ,either by another cable company or by a member here who has the suitable equipment.
If the differences are real ( which I tend to believe are) wouldn't it be heard on such a recording?
Pcoombs
I don't understand how your cd comparison works. Please describe it step by step.