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[Pack of 10] Clip-on Ferrite Core Ring Bead Anti-Interference High-Frequency Filter RFI EMI Noise Suppressor Cable Clip (3mm Inner Diameter)

4.2 4.2 out of 5 stars 282 ratings
$8.90 with 19 percent savings
List Price: $10.99

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3mm inner diamter
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Purchase options and add-ons

  • Package included 10pcs ferrite core
  • Usage- anti interference, improve signal and filter
  • Easy to install with double snap clips
  • Clip on all kinds of cables, like USB cable, Date line, AV cable, Phone, Power cord, Coaxial, Audio, Video cables etc.,
  • Color : Black; Material : Plastic(Housing), Ferrite(Core)

Frequently bought together

Topnisus [Pack of 10] Clip-on Ferrite Core Ring Bead Anti-Interference High-Frequency Filter RFI EMI Noise Suppressor Cable C
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Customer reviews

4.2 out of 5 stars
4.2 out of 5
282 global ratings

Customers say

Customers like the quality and ease of installation of the wireless accessory. For example, they mention it's well-made, easy to attach to the cable, and easy to clip onto a headset. That said, opinions are mixed on performance, interference, fit, and noise.

AI-generated from the text of customer reviews

14 customers mention14 positive0 negative

Customers are satisfied with the quality of the wireless accessory. They mention that it is well-made, has a high-quality choke, and the plastic casing seems to be good.

"These are decently well made, but the description is misleading...." Read more

"...work for my application, but I'll grant it 4 stars anyway-- they're well-made...." Read more

"The product is well made and appears to work. I wish I had bought a selection of different sizes...." Read more

"Good quality and snap together nice...." Read more

8 customers mention8 positive0 negative

Customers find the installation process of the wireless adapter to be easy. They mention that it's easy to attach to the cable, and clip onto a headset. Some say that the quality is good and the product snaps together nice.

"Easy install" Read more

"Easy to clip onto headset. Using to assist in EMF mitigation." Read more

"Good quality and snap together nice...." Read more

"...The ferrite clips were well packaged, and easy to install." Read more

7 customers mention7 positive0 negative

Customers appreciate the value of the wireless accessory. They say it's nice units for the cost.

"...So maybe I'm just a dummy. Oh well, these were cheap and a good learning experience." Read more

"...These are well worth the money if you have a problem as bad as mine. Thanks again!" Read more

"...Cheap enough to give a try" Read more

"Its cuts the static a little bit. They were cheap so I don't regret trying them," Read more

20 customers mention12 positive8 negative

Customers are mixed about the performance of the wireless accessory. Some mention that it works great and the radio works fine with the lights on, while others say that it didn't work in their situation and the magnets were broken and unusable.

"These ferrite cores arrived on-time as expected. And they function quite well to boot...." Read more

"...These were ineffective...." Read more

"The product is well made and appears to work. I wish I had bought a selection of different sizes...." Read more

"This product did not work for me. I am getting the local radio station through our sound system...." Read more

9 customers mention3 positive6 negative

Customers are mixed about the interference. Some mention that the cores eliminate interference, while others say that it didn't stop the radio interference.

"...Also, I'm giving it 3 stars because it didn't work for my interference problem. It helped a little but the interference is still there." Read more

"...That's what these are. They're basically designed to prevent electronic interference both TO and FROM a device...." Read more

"My LED landscape lighting is interfering with VHF television reception - the lights completely inhibit reception of channel 11 when they are on...." Read more

"...radio stations were coming through loud and clear and the signals were very strong...." Read more

9 customers mention5 positive4 negative

Customers are mixed about the noise. Some mention that the speakers reduce high frequency line noise and eliminate cell phone buzz, while others say that they suffer from extreme amounts of signal noise when drawing power from the battery.

"they do appear to reduce high frequency line noise." Read more

"These fit well on the cord of my AC power supply. They filtered out some of the line noise, solving a noise problem I had." Read more

"...Unfortunately for me, they were not enough to mitigate the signal noise I was experiencing with two different pairs of USB-powered PC speakers...." Read more

"Eliminated the RF noise on my unshielded XLR cables..." Read more

8 customers mention5 positive3 negative

Customers have mixed opinions about the fit of the wireless adapter. Some mention that it fits well on the cord of their AC power supply, while others say that it's a little too small.

"...This is a 5mm which is really tiny but it fits perfectly. I need to get an RFI meter to be sure...." Read more

"These fit well on the cord of my AC power supply. They filtered out some of the line noise, solving a noise problem I had." Read more

"...I received one ring that was the wrong size so I only have 9 that are usable for my intended purpose and..." Read more

"They fit well. Did not solve my problem, but was not because of the product fit." Read more

Fits on AC power cord.
5 Stars
Fits on AC power cord.
These fit well on the cord of my AC power supply. They filtered out some of the line noise, solving a noise problem I had.
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Top reviews from the United States

Five Cupcakes Today
5.0 out of 5 stars Eliminated the RF noise on my unshielded XLR cables
Reviewed in the United States on September 10, 2023
Color: 7mm inner diamterVerified Purchase
Wasn't sure if I should place one or two or four of these on my cables so I went overboard and placed two at each end and was not disappointed.

I didn't know RF noise was a real problem when it came to microphones until I got back into studio equipment and when I first connected my microphones to my recorder I thought my recorder was broken; I kept hearing this high pitched beeping and fuzz reminiscent of when phones back in the 2000s used to interfere with speakers. Turns out that's the sound of wifi and other wireless transmissions being picked up by cables that are unintentionally acting as antennas.

You can usually remove the sound in post but it's always best to ensure you have something of high quality going in (after all, garbage in, garbage out). Tossing these simple, cheap magnets onto your cables just might save the day.

I have tried different mics on the same cables and found that the mics themselves were picking up RF interference and when that's the case, these won't help. They're perfect for cables though (I have WBC XLR cables and the 7mm versions of these are perfect).

I even picked up a second 10-pack of these so I can attach them to other unshielded, unprotected cables for piece of mind because once you hear the annoyance of RF interference, you don't want to hear it again and at under $10 for a pack, these can't be beat.
One person found this helpful
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wordforward
5.0 out of 5 stars seems to work
Reviewed in the United States on January 10, 2024
Color: 5mm inner diamterVerified Purchase
I used one of the ferrite beads on my cell phone. You can attach it to the earbud wire. This is a 5mm which is really tiny but it fits perfectly. I need to get an RFI meter to be sure. I can't feel the buzz anymore that I was feeling in my ear.
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Only review bought products
4.0 out of 5 stars Use to kill my interference!
Reviewed in the United States on October 21, 2023
Color: 9mm inner diamterVerified Purchase
Had line interference!
Found these helped on my line!
But buddy two doors down has it much worse and didn’t help him, so I would say depending on the extent of your noise these may or may not work for you!
But it’s a good start!
Might have to use line filter!
All I can say is they worked for me!
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5port
5.0 out of 5 stars Killed my birdies...
Reviewed in the United States on December 9, 2023
Color: 7mm inner diamterVerified Purchase
After receiving a box of 10 of these I got inspired to apply one to every lead coming out of my ham radio transceiver. This amounted to about 7 leads. All of my birdies are gone (erroneous oscillations). I didnt expect it to work THIS well. I just ordered a common mode noise filter and this is a great step towards making that work!
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Tony Y.
3.0 out of 5 stars It's OK
Reviewed in the United States on January 21, 2017
Color: 3mm inner diamterVerified Purchase
These are decently well made, but the description is misleading. The name of the item needs to be clarified so customers know it's 10 pieces of 1 size of ferrite core. So I bought the 10 pc 3 mm, when I thought it was 3 mm/5mm/7mm…etc.

Also, I'm giving it 3 stars because it didn't work for my interference problem. It helped a little but the interference is still there.
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Scott Pearce
5.0 out of 5 stars Works great, can't overcome USB-powered speaker signal noise.
Reviewed in the United States on March 22, 2017
Color: 5mm inner diamterVerified Purchase
These ferrite cores arrived on-time as expected. And they function quite well to boot.

Unfortunately for me, they were not enough to mitigate the signal noise I was experiencing with two different pairs of USB-powered PC speakers. The speakers in question are the Amazon Basics USB powered speakers and the Dell AE215 USB powered speakers (without subwoofer).

Both sets of speakers suffer from extreme amounts of signal noise when drawing power from the host PC while connected to the 3.5 mm connector.

I added a core to the audio cable near the source and near the speakers themselves and the signal noise was significantly reduced but not eliminated. I then added a core to the USB power cable, again, on each end, and the signal noise was reduced further!

Sadly, the signal noise affecting both sets of speakers was so bad that even 4 ferrite cores each would not eliminate the noise completely.

Although these cores do not necessarily work for this particular application, I am holding on to them for posterity because they do work well, they just can't overcome really and truly terrible signal noise.

Also, I'm not totally sure that this is what ferrite cores are actually for. So maybe I'm just a dummy. Oh well, these were cheap and a good learning experience.
3 people found this helpful
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Dan
1.0 out of 5 stars No Help with RFI/EMI
Reviewed in the United States on October 26, 2022
Color: 5mm inner diamterVerified Purchase
I installed new LED headlights and this caused RFI/EMI on certain weaker radio stations. I bought two boxes and installed 4 cores spread out on each power cable (16 total). The improvement in static reduction was about 5%. I will have to try another route….
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Amazon Customer
5.0 out of 5 stars Arrived swiftly
Reviewed in the United States on October 13, 2023
Color: 3mm inner diamterVerified Purchase
Easy install
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Top reviews from other countries

Manojit Ghosh
5.0 out of 5 stars 5 star product
Reviewed in India on June 30, 2023
Color: 3mm inner diamterVerified Purchase
5 star product
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JennyGraves
5.0 out of 5 stars Fast delivery and good product
Reviewed in Australia on November 22, 2019
Color: 3mm inner diamterVerified Purchase
Very quick delivery and the quality of the product seems good.
I use these for preventing EMF radiation from travelling up the wires on headphones. I did have some problems opening them, as the clips are a bit tricky and quite small but eventually figured it out.
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