New expensive power cord for amp and no change in sound?


I bought new an expensive(for me) well known and reviewed power cord for my very good amp and plugged it directly onto the wall socket. After a couple of weeks of daily use I hear no change in the sound quality from a $500 cord. I don’t want to name it for fear of getting my thread deleted. You would know it or at least be aware of the company. Did I throw away several thousand dollars? Before I get the snake oil answer I want to let you know that I bought an upgraded cord for my pre as suggested by the pre’s manufacturer and am pleased with the results.

I guess for full disclosure the amp’s manufacturer said don’t bother. But I had had good luck with the pre so I thought it would be a good idea.

Anybody else have this happen to them?

roxy1927

Showing 12 responses by mihorn

It’s hard to hear the subtle difference sounds of power cords because 1 power cord changes 3~7% of whole sound (small portion). The form of different sounds might be different from your expectation and you should relax and look at whole package.

My system sounds very quiet and maybe you can pick up the sound difference easily from below video (JPS $700, Zentara $2200, WTv2 $1000, WTPC $2400).

To hear cable sounds,
1) click this 18:51 WTPC (This’ll open Youtube window).

2) In YT, make a small YT window (narrow & tall, Right half screen) to see the video screen and 2 time stamps (18:51,  4:45  in description) are in the same screen.

3) Click (18:51 WTPC) and listen 1 minute. Click (4:45JPS) and hear 1 min. And repeat to hear the sound difference. Just relax and watch the screen and listen to the vocal and sound-stage.

Can anyone hear the sound difference with my PC comparison video? (28 posts below), Please help! my previous post

tvad    I like to walk into rooms at audio shows. Look around at the attendees, and try to imagine which guys are posting on Audiogon.

Please visit my room (#272) at THE SHOW 2024, OC. Costa Mesa audio show on June 9-11. I promise you’ll meet many members.

Unlike other rooms which talking and music don’t mix (un-natural sound), my room is full of conversation (natural sound music) like a live band cafe. Alex/WTA

---- CORRECTION! ----

THE SHOW date is June 7-9. Not 9-11. Web-site (info packet) has some 2023 info and it is confusing.

Please visit my room (#272) at THE SHOW 2024, OC. Costa Mesa audio show on June 7-9.

grislybutter -----  @mihorn I read the program and didn't get a good sense of who will be there. Is it s tradeshow? Rooms setup for listening?

Yes. All rooms are setup for listening. This is an audio show. 

From it's home page "North America's longest running Hi-Fi audio trade show, T.H.E. Show, now in its 28th year"

More than 100 audio company participants. List is here. "THE SHOW."

Alex/WTA

invalid ----- @bimmerlover I have to question the thinking that it’s the last 5 feet, the equipment draws the current, so it’s the first 5 feet.

I’m with invalid. In my experience, a last 5ft power cord is much more important than in-wall wiring. Like a garden water hose, the nozzle only sees what it’s connected.

The audio equipment draws the current from a power cord which is a bigger reservoir than in-wall wiring. *Usually, the audio gear doesn’t use 100% of current. **Drawing current/water from a bigger hose is faster than drawing from a smaller diameter hose (in-wall wire).

In-wall and dedicate lines influence the sound but are less impact to the sound than power cords. Alex/WTA

immatthewj

as far as water coming out of a garden hose to a nozzle, if all the plumbing in the house is ancient and gunked up, it will have a detrimental effect on the water pressure at the nozzle connected to the garden hose.

Of course. Electricity works differently from the water. Supplying the quality electric current to a audio gear isn’t same as dumping the water ASAP (or pressurizing the water to shoot farther). It is more ready for the demand situation. So, I wrote in my last post *Usually, the audio gear doesn’t use 100% of current." Alex/WTA

bimmerlover

@mihorn Your comment “In my experience, a last 5ft power cord is much more important than in-wall wiring. Like a garden water hose, the nozzle only sees what it’s connected. The audio equipment draws the current from a power cord which is a bigger reservoir than in-wall wiring.” defies all logic and physics.

You seriously think that your “high-end” 5 foot long power cord is a “reservoir” for energy/electrons/electricity?

As I wrote, my words are from my experience. Please let me know what logic & physics I am against. May be I can explain.

In fact, having an only natural sound system in the world, I did many unusual things to my system that others don’t. Is it defying logic & physics? Alex/WTA

New video -- 2 Power cords sound test

1) click 3:51. This opens YT window.

2) In YT, make a small YT window (narrow & tall, right half screen) to see the video screen and 2 time stamps (3:51, 9:37 in description) are in the same screen.

3) Listen at least 1 minute each and repeat.

Just relax and feel what comes to your ears when you click.

** Please visit my room (#272) at THE Show 2024, OC. Costa Mesa audio show on June 7-9. Alex/WTA

Trust your ears. There are many PC review videos. Don’t trust reviewer’s ears. Listen to the recording of the actual PC. Comparison videos are better. Microphones don’t lie. Human ears are biased always and they trick us. If I like A sound better than B sound in a comparison video, I like A sound better in real life too. Alex/WTA

I made another 5 PCs listening video since my system sounds closer to the original music with more sound improvement and my ears noticeably changed to stronger (less sensitive, less ear ringing, etc.) and relaxed (less watery eyes, less brightness = less dilated pupils, etc).

The transition to natural sound ears/brain took 3~4 days with a minor headache and my ears felt like a cotton ball clogged my ear canals. So, I know many of you won't hear the sound difference between PCs' sounds. But for some serous listeners, check below comparison.

5 PC sounds video.

1) click 17:39 .  This opens Youtube window.

2) Make a small YT window (narrow & tall = right half screen) to see the video screen and  time stamps in description).

3) Listen at least 1 minute each and repeat
 To hear better, listen to the original music (link in description). Just relax and feel what comes to your ears when you click.  Alex/WTA