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To get access to the full speed and feature set of HDMI 2.1, though, you are going to need a new TV. Thankfully, HDMI 2.1 models are becoming more common.
Colour can also be affected, as Category 1 and Category 2 cables haven’t got the bandwidth to convey the enhanced 10-bit colour depths, or Deep Colour, output by 4K Blu-ray players and 4K HDR consoles, let alone the 12-bit colour depth used by some Dolby Vision screens and 4K Blu-ray players. Both the source and the display will need to be QMS-compatible, but theoretically this could be added via a firmware update to newer devices (most likely those capable of VRR). The good thing is, if it works, it works. For example, if you're sending a 4K HDR signal from your 4K Blu-ray player to your 4K HDR TV and the TV shows a 4K HDR signal, you're set. It's not possible to get a better image using a different 4K HDMI cable. That's not how the technology works.Using HDMI ARC does not require a new HDMI cable. Any HDMI cable should be able to cope with the requirements – it’s only when we move on to eARC that this could (potentially) become an issue. But more on that later. Dynamic HDR improves on this by allowing frame-by-frame tuning for a better visual experience. It allows each scene in a movie to use the full range of colors, contrast, and brightness. HDMI 2.0 partially supports it for 4K60 content, but HDMI 2.1’s increased bandwidth allows dynamic HDR with 4K120 and future HDR standards. Enhanced Audio Return Channel (eARC) As part of the process, you should consider enabling HDMI CEC (Consumer Electronics Control), so you can turn your TV on and control the volume on your soundbar or amp without the need for multiple remotes. A word of warning, though: turning HDMI CEC on can have some unwanted AV side effects, so you might want to experiment first.
The result is a delayed output of a video signal relative to an audio signal, and the result of that mismatch is sound that (oh-so-frustratingly) doesn’t match the timing of your picture. HDMI 2.1 will make it possible for TVs to talk in real time to A/V receivers, soundbars, Blu-ray players, game consoles, and other source devices to ensure your video and audio are in perfect sync all the time. Do monitors have HDMI 2.1 too? HDMI Cable Power will be available for all categories of HDMI cable, but for ARC/eARC support, you'll want to look out for cables labelled as Ultra High-Speed HDMI Cable, Premium High-Speed HDMI Cable with Ethernet, High-Speed HDMI Cable with Ethernet or Standard HDMI Cable with Ethernet. What HDMI 2.1 sources are available now? Now, it's important to note that you will be limited by your TV's capabilities. If your TV doesn't support 4K resolutions, for example, you won't be able to play PS5 games in 4K, at any frame rate – likely making do with HD. You'll need an 8K TV for 8K gameplay, too, but there aren't really any 8K PS5 games in sight (at least not right now), so that's a problem for another day. There’s a lot to get excited about when it comes to HDMI connections and the Xbox Series X, as well as a lot to learn, which is why we’ve created this guide.With many TVs, HDMI ARC will work automatically. If it doesn’t, you’ll need to grab a remote and tweak a few of your TV settings, including turning off your TV’s built-in speakers and enabling your telly to send audio out to an external speaker or amp. As we mentioned above, just because you're getting a new TV doesn't necessarily mean you need new HDMI cables, even if you're upgrading to something with 4K and HDR. Over short distances, say under 6 feet, just about any recent "high speed HDMI cable" should work fine. "High Speed" is the rating used by HDMI companies to indicate cables that have the bandwidth to handle 1080p and greater video resolutions.
You should be able to get 4K/60, and a basic 8K/30, with current cables, but the rest will need an Ultra High Speed HDMI cable. More on these new cables below. The main sources that can take advantage of 2.1 right now are the PlayStation 5 and Xbox Series X, as well as high-end graphics cards. To put it another way, a poorly made 3-foot cable will probably work fine for most people, but a poorly made 15-foot cable probably won't. With any long-run solution you're considering, make sure it can handle 4K/60, HDR and so on. Many options can't. There are three technologies to consider:
In broad strokes, the build and material quality is much more important in a long HDMI cable than short. Over 15 feet there is a much higher chance that a mediocre cable won't work, or won't work at the resolution you want. This still doesn't mean you need to spend a fortune on a long cable, there are plenty of options for roughly the same price per-foot as the ones mentioned above. It does mean that no-name cables might be less likely to work. In the past, our advice was, “Go ahead and buy that TV with confidence.” HDMI 2.1 was still too far away. But if you’re intent on buying a flagship TV, we urge you to consider going with one that has HDMI 2.1 inputs. You’ll find a handful of great options from the likes of Samsung (the QN90A), LG (the C1 OLED), Vizio (the V-Series), and even Hisense (the U7G), all at fairly competitive prices.
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