So I received the replacement HDMI cables from Monoprice and the same problem persists.
When hooking these cables up between a Samsung LED TV (UN55KS8000) and a Xbox One S (Slim) and outputting 4K UHD to the TV in "HDMI UHD Color" mode there is No Signal (black screen), but when turning off "HDMI UHD Color" there is a signal. The same issue crops up when hooking up the cables between my PC which has a EVGA GTX 980Ti video card and the same TV (no signal in 4:4:4 4K resolution at 60hz). I have tested both 6' and 10' lengths of the same cable on four separate occasions with no better result. The replacements worked no better than the initial cables I ordered.

TLDR These cables have obvious 'Handshake' issues with different devices so your mileage may vary. They seem to not play well with Samsung's "HDMI UHD Color" picture setting and PC's 4:4:4 chroma, 4K @60hz

PROS: Works with 1080P

CONS: Does not work with some devices, and it is hit or miss with 4K resolution, HDR and Samsung's "HDMI UHD Color" picture setting.
Obvious 'Handshake' issues with these particular HDMI cables from Monoprice.

Bought these to connect between Xbox One Slim to a Samsung UN55KS8000 SUHD 4K TV and a PC to the same TV.
1) It would not pass the 4K test requirements of the Xbox One Slim (older Redmere cable passes this test)
2) It would not pass "HDMI UHD Color" and the TV would drop the signal from the PC to TV with "HDMI UHD Color" mode enabled (older Redmere cable passes this mode fine).

My feeling is somewhere there is a "handshake issue" with these particular cables between the latest UHD devices on the market.


PROS: Super thin.

CONS: Doesn't pass all handshaking requirements

I just want to say that i purchased two Ultra Slim 18Gbps Active High Speed HDMI® Cable, 10ft Silver & (2)-6 ft. They were temporary substitutes for my home theater. As I had send my original highly unbelievable priced (4)-HDMI cables each one in the +200.00 dollar range to be exchange for the next higher cable. (I always like to keep up to date) which they claim is 28Gbps and gives you greater and better sound and image. it takes about 10 business to exchange in the mean time i would use these just to watch regular TV. To my surprise these Ultra Slim 18Gbps Active High Speed HDMI® Cables, impressed the heck out of me i was even able to watch Dolby ATMOS on them. I also have to say i'm a audiophile sound is very crucial to me and i am very picky to sound thank God i was born with great hearing ,but i do want to say that the Ultra Slim 18Gbps Active High Speed HDMI® Cables out did the ones i send in for exchange, and the ones i sent in for exchange were 22Gbps
if monoprice would have had these cables long ago i would have bought them the only sound quality that was not heard was DTS:X because its not out yet for my Onkyo TX-745 A/V receiver we are still waiting for the firmware update I Guess DTS is still working the kinks out on that software. As for DTS-Master Audio wow it sound better than it did before. I hope the new ones that come in sound just as good as monoprice. i'm beginning to get the idea to just sell them when they come in and keep Monoprice Ultra Slim 18Gbps Active High Speed HDMI® Cables

PROS: Cheap and great quality both for Audiophiles and HD (1080p), super HD (OLED) , ULTRA-HD (4k)

CONS: Monoprice Make sure your take care of your stock as it comes in and shipping that why you don't have to worry about returns,
as in for item cons. Monoprice should have come out with this technology years ago you guys would have killed the HDMI Lie

out of 2 identical cables - 1 was DOA.
50% failure ratio.
Pain to have it exchanged.


PROS: Working one is good

CONS: I wouldn't buy it again for sure

I bought this cable to run from my AVR's hdmi out to my TV and i was told it would work. but it didn't work. The TV would turn on and off on its own. I made sure the "TV" end of the cable was plugged into my TV and the other end was plugged into the HDMI out of the AVR. I am returning the cable.

PROS: very thin, very easy to work with.

CONS: it doesn't work from AVR's HDMI out to the TV as someone from monoprice said it would.

These are by far the best HDMI cables I've owned. They are very thin, light and flexible.
They support plenty of bandwidth for 4K and the future.

I received my cable yesterday and after tried it I am very impressed with the quality of image and sound I get from my equipment using this cable , superb image !! I did some comparison with my other cable I was using (mediabridge Ultra series) and Intermediately notice a more pure and sharper image with more detail and no distortion.. beautiful colors and much better sound too. this cable is superior to all the hdmi cable I have used before and the customer service is great!! I am a very happy customer and I recommend Monoprice to anyone looking for great product with great price.

PROS: image and sound satisfaction at its best

CONS: none so far

Ultra high speed at 18 Gbps helped my 4K HD TV performed well. The cable is flexible and very well made. One thing to remember is to read each end of the cable. One end is labeled "Source the other "TV". The source end goes to your souce, either Blu ray player, Roku, Cable box or other devices. The TV end goes to your TV or your Home theater receiver.. Very good cable.

I bought this to work with my Apple TV, and my Lightning-to-HDMI adapter for my iPhone. It works with the Apple TV, but not with the Lightning-to-HDMI adapter from Apple.

These work great and are very slim and flexible -- they significantly reduce the clutter behind my A/V equipment.