A:AnswerThe directional is simply they tested both ways and the signal is faster and purer via the direction they tell you. Important when passing video data, especially.
For ARC, your cable may be sending data both ways. This cable definitely meets the needs of that process.
A:AnswerBecause a sucker is born every minute. The thing about digital instead of analog is that everything is more of a 0 or 1, Yes or No question with the signal. If you have an HDMI cable with decent connectors that is working, it should be fine. Any difference in signal between a cheap HDMI cable and an $80 cable would likely only be detectable with high-end test gear. Save your money.
A:AnswerI would recommend the cinnamon or sky cable. The cinnamon cable is rated very well, great audio as well as vivid picture quality. The sky cable is just a step down but works very well on my 4k player.
