Added a ferrite core to an Asus Essence power input.

Soldato
Joined
19 Jun 2009
Posts
3,982
I was reading a thread on Audiophile Style about ferrite cores, thread below.


Of course I've had them standard on some data and VGA cables for years, however I've never really tried adding them, I did once wrap a Cat 5 ethernet cable in a toroid core but otherwise nothing else.

So I purchased a pack of 20 from Amazon (works out each ferrite core was 50p) and was trying in various places, added them to USB cables, added them also to DC power adapters, but then I tried one on the molex cable that powers my Asus Essence STX II.

Now my computer is a workstation machine (I'm a software dev) and expect in terms of EMI/RFI it's not the cleanest, there is 6 fans (3 of them are 180mm). There is also 3 Western Digital gold HDD's in there. I do already have external mains conditioning products in use and it already sounded what I thought was pretty good.

Well I'm very surprised the difference, it's removed some harshness from the sound, however there does not appear to be any lack of detail.

There are 2 photos below, one before with a red arrow, this shows where it's been fitted. The second photo is the ferrite core added. So try yourself and post what you think, to date this is the cheapest mod that's made the most difference to sound improvement.

AIL4fc-yZciXujvpklES2ud6eDWios9Jp6BvYCvC5fzwEKEl03KlBc89m9gsGcFHwg4af_ADKpGVw038mw6ByKlRnCfUAkndfVFsK13y9NHRNlTmPp0gankb99GFrorfWZVnLanbrfN7RoQ2h3F-Ay1rtcIS=w1145-h858-s-no


AIL4fc9CBz-IIvN6KX5kuaHwzJGlUxoW7JKnoa-Xgj2YpbS8c78GX9MBUXwNre7d3I_l47w-9xvnNRu4xFvExmm-HB0bXaYUIYJhA5OismC2dXfjJ_VypQBNBvdCRlbI_LcFlv5avZ7oi3toJvZpv6lN8eOC=w632-h842-s-no
 
Last edited:
Fairly cheap experimentation there so worth a go I suppose.

I saw something a while back about the use of ferrites from a HAM enthusiast and they were talking about Fair-Rite 43 ferrite rings and the cable had to pass through 7 times (for what reason I never saw) but this person did see very noticeable improvements but then they were looking more specifically at radio frequencies although if it works for that it should be beneficial for audio.
 
I've actually removed this ferrite core now. What happened is it was strangling the sound, taking dynamics away.

I have another plan where I'm going to put ferrite cores around the SATA & motherboard cables next to the PSU connections. The theory here is preventing noise entering the PSU from computer side, as you say these are pretty cheap things to try. I have added ferrite cores around USB cables immediately before they connect to my motherboard.

Over the HAM thing about passing cables through cores, this has been done also with ethernet cables and reduction in noise measured.
 
Placebo.

The radio wave thing could probably be backed up with measurements - so that might be correct.

But there is no way you can say it has changed the sound, pure placebo.
 
Placebo.

The radio wave thing could probably be backed up with measurements - so that might be correct.

But there is no way you can say it has changed the sound, pure placebo.

This explains what's happening.
 
Last edited:
I love how the people making claims like this are always older men with a lot of disposable income, and very likely suffering age related hearing loss.

No, I'm not going to buy a "fleshlight for power cables ferrite inductor" from a business I'm sure the author of the article has nothing to do with.

The OP has admitted to running passable but largely low end audio hardware to boot, yet seems to spend a shocking amount of time and money on crap like cables and "ferrite inductors" when the investment would be far better placed into better speakers. I'm sure I'll get told that "it's just ten bucks!" but it isn't, is it? It's ten bucks on this, then ten bucks on that, and in the end all the utter garbage bought ends up costing more than the actual speakers he owns.
 
Last edited:
I just got a new amp, Fosi BT30D, and it uses RCA input. So I connected it to sound card using a plain cable. I got awful, LOUD noise. That peed me off as I thought amp is faulty. But then I tried another cable with ferrite core on it, and there is no noise whatsoever.. Happy days :)
 
Back
Top Bottom