What are HDMI eARC and ARC? A fast information

So you bought a brand new big-screen TV this Black Friday and need to purchase some equipment. A kind of equipment might be some HDMI cable so you may interface along with your Xbox, Ps 5, Blu-Ray participant, or different units. However what are the HDMI eARC and HDMI ARC on my new TV? And which ought to I take advantage of?

Estimated studying time: 4 minutes

If you’re accustomed to any shopper know-how, you recognize it’s quick to develop and transfer on. For some units, like smartphones, the tech is usually incremental, however it might probably transfer very quick for different applied sciences. HDMI know-how has moved rapidly, and there are a number of differing types to select from, two of them being HDMI eARC and HDMI ARC.

We all know that an HDMI cable is used to hold the sign out of your machine to your TV however what are HDMI, eARC, and ARC?


HDMI ARC (Audio Return Channel) was developed to assist customers remove the necessity for a separate audio cable, comparable to an RCA cable or an Optical Cable. These ARC cables are high-speed licensed cables that may ship audio and video from the supply to the TV. The audio sign can journey each to and from the audio system, which is able to enhance the sound high quality and latency of the sign.

Most TVs made in the previous few years help HDMI ARC, which is broadly used. To make use of ARC, you have to use an HDMI 1.4 cable or larger. An instance of a suitable cable is the Finest Purchase Necessities cable or the StarTech cable on Amazon.

It is very important be aware which you could solely use the ARC performance by the particular port in your TV, and the exterior audio system or soundbar have to be suitable with ARC. You might also want to regulate the settings of your audio system, relying on the model and mannequin. So remember to analysis your system earlier than hand.

So the straightforward clarification is that ARC means that you can plug the whole lot into your TV and run just one HDMI cable to your sound system. This eliminates every other sound cables it’s possible you’ll be utilizing.

Audio Codecs Supported by ARC

  • PCM (2 Channels)
  • Dolby Digital (As much as 5.1 Channels)
  • DTS Digital Encompass (As much as 5.1 Channels)
  • DTS is just out there on fashions launched earlier than 2018


As we talked about earlier than, know-how strikes quick but in addition stays the identical. For this reason you would possibly see your TV have an ARC connection and a more recent HDMI eARC connection. eARC is far newer, and it’s possible you’ll not have it in your TV or sound system. Or you’ll have it on one and never the opposite. They’re backward suitable, however you will not profit from eARC if each units do not help it.

Samsung explains HDMI eARC this fashion; “eARC allows sending audio to a TV that originates from cable, satellite tv for pc, streaming or supply units to be despatched to an AVR or sound bar by a single HDMI cable. This ensures the simplicity of the connectivity and that the unique audio could be skilled.”

So sure, eARC does precisely what ARC does, nevertheless it does higher. HDMI eARC makes use of a more recent HDMI 2.1 know-how that improves bandwidth and velocity by leaps and bounds. eARC additionally permits for the transmission of HQ audio out of your TV to your soundbar or AV receiver, and it’s suitable with high-bitrate codecs like Dolby Atmos and DTS. An instance of a suitable eARC cable is the Rocketfish cable from Finest Purchase or the StarTech HDMI 2.1 cable on Amazon.

Comparability of ARC and eARC

Compressed 5.1 Sure Sure
Uncompressed 5.1 No Sure
Uncompressed 7.1 No Sure
Excessive Bitrate and object-based as much as 192kHz, 23-bit(eg Dolby Atmos, DTS:X) No Sure


To seek out out in case your machine is ARC or eARC suitable, take a look at the HDMI connections for the labels ARC or eARC. Hopefully, this easy information was sufficient that will help you work out which one it is best to use.

You probably have two ARC-compatible units, use a suitable ARC cable. You probably have one ARC-compatible machine and one eARC-compatible machine, you should use both an ARC 1.4 cable or an eARC 2.1 cable, however you’ll solely have the ability to make the most of ARC options. You probably have two eARC-compatible units, use a 2.1 cable to make the most of the higher eARC options.

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Final Up to date on November 27, 2022.

HDMI eARC vs ARC Techaeris-min

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