What are HDMI eARC and ARC? A quick guide | Script Tech

So you bought a brand new big-screen TV this Black Friday and wish to purchase some equipment. A type of equipment might be some HDMI cable so you possibly can 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

In case you are conversant in any client know-how, you already know it’s quick to develop and transfer. For some units, like smartphones, the tech is mostly incremental, however it may well transfer very quick for different applied sciences. HDMI know-how has moved rapidly, and there are just a few 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 gadget to your TV however what are HDMI, eARC, and ARC?


HDMI ARC (Audio Return Channel) was developed to assist shoppers remove the necessity for a separate audio cable, akin 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 methods 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 couple of years help HDMI ARC, which is broadly used. To make use of ARC, you will need to use an HDMI 1.4 cable or greater. An instance of a suitable cable is the Greatest Purchase Necessities cable or the StarTech cable on Amazon.

It is very important be aware which you could solely use the ARC performance by way of the precise port in your TV, and the exterior audio system or soundbar should be suitable with ARC. You may additionally want to regulate the settings of your audio system, relying on the model and mannequin. So you should definitely analysis your system beforehand.

So the straightforward clarification is that ARC permits you to plug every part into your TV and run just one HDMI cable to your sound system. This eliminates some other sound cables chances are you’ll be utilizing.

Audio Codecs Supported by ARC

  • PCM (2 Channel)
  • Dolby Digital (As much as 5.1 Channel)
  • DTS Digital Encompass (As much as 5.1 Channel)
  • DTS is simply accessible on fashions launched earlier than 2018


As we talked about earlier than, know-how strikes quick but additionally stays the identical. This is the reason you would possibly see your TV have an ARC connection and a more moderen HDMI eARC connection. eARC is far newer, and chances are 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 received’t profit from eARC if each units don’t help it.

Samsung explains HDMI eARC this fashion; “eARC permits 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 way of a single HDMI cable. This ensures the simplicity of the connectivity and that the unique audio will be skilled.”

So sure, eARC does precisely what ARC does, however it does it higher. HDMI eARC makes use of a more moderen HDMI 2.1 know-how that improves bandwidth and velocity by leaps and bounds. eARC additionally permits for 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 Greatest 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(e.g. Dolby Atmos, DTS:X)  No  Sure


To seek out out in case your units are ARC or eARC suitable, have a look at the HDMI connections for the labels ARC or eARC. Hopefully, this easy information was sufficient that will help you determine which one you must use.

When you have two ARC-compatible units, use a suitable ARC cable. When you have one ARC-compatible gadget and one eARC-compatible gadget, you need to use both an ARC 1.4 cable or an eARC 2.1 cable, however you’ll solely be capable of make the most of ARC options. When you have two eARC-compatible units, use a 2.1 cable to benefit from the higher eARC options.

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Final Up to date on November 27, 2022.

HDMI eARC vs ARC Techaeris-min

What are HDMI eARC and ARC? A quick guide