I connected this to my Panasonic 4K VCR to test the 4K screen on a new high quality Sony TV. I did not experience any interference from other cables, signals such as WIFI, electromagnetic or electrostatic interference from the TV, streamer, power adapter or other devices nearby. No artifacts or other interference from 4K or 1080P movies that could come from a cable or a broken connection. Obviously (unless they came out, which I've noticed) I can't test the 8K limit on this one. Something like Ultra Super Duper HD will soon become a buzzword. It's hard to imagine that this is even necessary. I hooked up a 4K HD feed from a smart 4K DVD player that could connect to the internet and serve things like Netflix or YouTube. On a pristine-looking YouTube, a man with a 4K camera took an hour-long stroll through the shopping district of Tokyo, Japan. It felt like walking with them, the details were so good. It's hard to imagine 8K adding to that, but just in case it's already certified, so if I need it in the future I'll have it. The cable is made of high quality materials and must be well shielded under a strong braided weave. As I said, no problem. I even hooked up an electric drill and ran it near the connector to see if it would interfere with the movie signal from my 4K DVD player with that cable. No problem, I didn't see a flash. A good length to reach a TV on one end and a 4K DVD player on the other with a spare cable. Nothing else to test, good price, I recommend.
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