NDX to ROUTER ETHERNET CABLES

Mike-B posted:

Hi NQ,  the SQ changes with ferrite on ethernet is subtle,  its nothing like a cable or box change,  for me it adds a clarity, removes a dullness & treble end fine detail is better.      Not knowing the ferrite operating range is concerning,  if Amazon's seller has not listed the spec's they might be any-old-thing,   ideally you need a wideband somewhere from 1 MHz to 100MHz or even better to 500MHz.     If you can give me some clues with make & model numbers I happy to have a go to track down the spec's if they are available.      

Hi Mike,sorry,I forgot I even posted on this thread...anyway,the ones I have (ferrites) are from Amazon-7mm inside diameter-part # TN008.This is about all I can see on the web page for information.They come in a 10 pack.Topnisus is a name on there too.