Dreamtop 20Pcs Ferrite Core Ferrite Choke Ferrite Clip-on Black Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip with 3.5mm 5mm 7mm 9mm 13mm Inner Diameter for USB/Audio/Video Cable Power Cord

Very useful to eliminate interference in your audio and data cables good value for money

Did the job and has reduced the dabs dropping out not all the kit was required as some were too large but was as described

Great set of Ferrite choke rings to fit every size of cable you are going to use in your home. A Must with how bad the UK mains power can be with Radio interference, power surges like when Fridge comes on or off causing a crack in sound from the speakers of your expensive Hi-Fi or TV. The use of Ferrite choke rings on your cables of sensitive electric equipment will help suppress or stop the mains power surges and Radio Interference which can be very bad if you live high up like on a hill or near a number of radio masts. These Coke rings come in a nice to use box and are easy to fit.

I bought this set and used one of the ferrites to remove DAB radio interference being caused by a hard wired dash cam power supply.Picking the right size and choosing whether to loop the wire through is a bit hit and miss, but there a is a good variety in the set to allow you to try a few options and find one that works.Clips etc. seem good quality.

Good range of sizes in the package. However, used this on my computer's peripherals to reduce RF interference from my amateur radio, however it had no effect. There will likely be some devices or products that this will be useful for, but for amateur radio purposes, I recommend a toroid core instead (to wrap the wire or coax around multiple times).

I bought these as a few people in the HI FI world do say they do stop some interference so I bought some and yes they do, so yes good value for money and Functionality it all adds up to better listening which is what we all want.

Easily fitted to my Led strip lights and DAB radio. Early days but hopefully reduced or cleared interference. Also moved radio to new location, so that could also have helped. Worth buying. Arrived quickly and in good condition.

Had microinverters that were not given a good reading. Fitted the ferrite rings to several appliances and made a big difference to the unit registering enphase inverters