[witchdoctor]

I'm not sure whether or not I've posted a "negative opinion" about power cords. If I am included in the 3 you've counted, make the number 2. I have used more than a few after market power cables, and still do use a couple. I use them now because I have them. I use them because they're the proper length for the application, not for a perceived sonic benefit.

timind steps up, thanks for your transparency, no harm no foul

[witchdoctor]

If you counted me make it one.
I still use them because I have them as well.

PDR steps up too, great, thanks

[witchdoctor]

Check out this post about the Power Cord demo at Axpona 2019. The vendor posted a nice EKG type graph of the noise in the line before and after AND a VIDEO of the noise reduction you can hear for comparison during a demo of the cord:

https://www.stereophile.com/content/do-power-cords-make-difference-compelling-demo-shunyata

[witchdoctor]

So we had a LOT of discussion, has anyone watched the video? Comments? 

[Grit]

They aren't claiming just cable. They said there is a noise filter inside the plug. Whether or not there's an audible difference in a given system is still a different story. But at least it isn't based on just how the copper wire is wound.

[James Tanner]

Also folks any quality power supply (like in Bryston products) would reject incoming noise on the power line before it gets to any audio circuitry.

james

[timind]

Also folks any quality power supply (like in Bryston products) would reject incoming noise on the power line before it gets to any audio circuitry.

james

Thank you James. This point needs to be made more often by people in the industry. Not just Bryston, but any decent piece of audio equipment will have a power supply designed to reject noise.

I currently have 4 amps ready for use. Even my 1965 built Fisher tube amp is dead quiet (surprisingly) at idle when I put my ear to the speaker. This amp has been recapped, but is still using the original 2 prong, 18 gauge power cord; it's probably the least substantial A/C cord in the house.

Maybe a $1500 power cable will improve the sound from this amp that I paid $300 for.

[timind]

So we had a LOT of discussion, has anyone watched the video? Comments? 

I watched it. Videos like that help keep the "snake oil" reputation alive in audio.

[OzarkTom]

It is too bad we all cannot use batteries in our system. Then this long discussion about power cords would be mute. Batteries usually sound the best in my experience.
GR Research  use battery powered components at all the audio shows they go to. That is one of the reasons they have always gotten top reviews at the shows.

[Elizabeth]

Also folks any quality power supply (like in Bryston products) would reject incoming noise on the power line before it gets to any audio circuitry.

james

One interesting fact (while using PS Audio Noise Harvesters on an AC line ahead of the amp) is when the Bryston 4B-SST² amplifier gets unplugged from the AC line... The Noise Harvesters blink.. When the Bryston is plugged in they do not blink** So the Bryston is eliminating some of the noise already on the line. So while some (particularly digital equipment) adds noise, the Bryston amplifier reduces it.
**though if the dimmer in the bedroom (on a different AC line!) is like half on, the Noise Harvesters on both the amplifier line and the power conditioner lines do blink no matter what..
I did  whole thread about the Noise Harvesters and the use of a AC line noise analyzer I borrowed from my (Bryston) dealer. Here: https://www.audiocircle.com/index.php?topic=162162.0
But I did not write about the above odd thing in that thread. (The same thing happens on the Furman REF20 conditioner AC line when it is unpluggged)

[witchdoctor]

I watched it. Videos like that help keep the "snake oil" reputation alive in audio.

Hmmmm, are you saying you couldn't hear the reduction in noise caused by the change of cables or it was just camera magic? That they faked the EKG graph too?

[witchdoctor]

Also folks any quality power supply (like in Bryston products) would reject incoming noise on the power line before it gets to any audio circuitry.

james

Yeah, but that wasn't a power supply, it was a cable. Is it common for cables to reject noise?

[Elizabeth]

Yeah, but that wasn't a power supply, it was a cable. Is it common for cables to reject noise?

I use a pair of 'extensions' from a one AC outlet 20 amp duplex.. They are made up of MilSpec 12 gauge silver plated Teflon insulated  wires in two sets of Quad twist. From using a Noise analyser borrowed from my dealer. The noise at the wall was '724" at the end of the 34' line it was 292 lower. (432) So clearly the line was reducing the noise 292 units
(the meter had no reference to actual numbers, just the range of 000 to 999, with the average being from discussions and practical application of most outlets being between 400 up to 750 noise levels.
From the measuring, the Quad twist wires alone were removing about 40% of the noise on the line.

[gberger]

witchdoctor,

You might be missing James' point, viz., power supplies (for audio and other uses) are designed and built to eliminate the crud coming through the electrical supply sources.

To ascertain whether a power cable really makes a difference, you'll have to check the current coming from the device's internal power suppl to the audio circuits, using the different power cables available.

george

[witchdoctor]

witchdoctor,

You might be missing James' point, viz., power supplies (for audio and other uses) are designed and built to eliminate the crud coming through the electrical supply sources.

To ascertain whether a power cable really makes a difference, you'll have to check the current coming from the device's internal power suppl to the audio circuits, using the different power cables available.

george

I think the point of this thread is whether after market power cables are created equal...or not. The ONE cable in the ONE video I posted is able to reduce noise, that's clear.

This is a Bryston Circle and I'll let James do the splaining on that end, I don't think he needs any help

[timind]

I think the point of this thread is whether after market power cables are created equal...or not. The ONE cable in the ONE video I posted is able to reduce noise, that's clear.

How would you get that from the original post? Of course they're not all the same, just look at them.

[timind]

Hmmmm, are you saying you couldn't hear the reduction in noise caused by the change of cables or it was just camera magic? That they faked the EKG graph too?

When you watch a video like that, don't you wonder what would happen if he plugged a standard power cord into his box? Maybe it would've had the same effect. Why didn't he do that? It would've made a more dramatic promo.

Stick a wire in the air and plug it into that box. I bet it'll pick up some noise.

What is the EKG showing? I have no idea and neither did Jim Austin. Useless without some reference.

[OzarkTom]

Living Voice has won quite a few best of awards at the Munich Audio Show. And they also use a very extensive system of batteries in their set-up. Vinnie Rossi still uses batteries in building many of his current componeets.

[witchdoctor]

How would you get that from the original post? Of course they're not all the same, just look at them.

The OP said power cables make a difference for him, the results are easily heard, no snake oil. This was your reply:

So you have no proof, and wouldn't care to provide it if you did. HAH HAH HA HAH HAH HA...

There simply is no proof. Only sketchy, bombastic rhetoric. HAH HAH HA HAH HAH HA...

I wish people would stop asking for proof. I also wish people would stop supplying there own personal experience as proof...on many subjects.

I am chiming in with facts and resources. Your just trolling

[PierreB]

I read all the 9 pages of this thread and I see lack of respect from some peoples. It’s suppose to be a positive discussion and not a provocation. This discussion goes round and round. 
Who will stop it??