Fantastic piece of kit honestly! If you have a ground loop hum when connecting balanced to unbalanced kit these will fix it . I used with my Naim preamp to a balanced power amp where I was suffering with a ground loop hum, I tried a manner of cables that claimed to work but with no joy but when I used these and the hum disappeared completely truly great. I’ve now changed preamp to a balanced one so they are no longer required. Thanks
eBay