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What you need to know about HDMI ARC and eARC

How to connect your TV to your receiver or sound bar

Want to watch Netflix or Amazon Prime Video through a new smart TV? Maybe some over-the-air TV broadcasts, too?

Planning to connect your TV to an A/V receiver or an HDMI-equipped sound bar?

Then you need to know about ARC and eARC. These special HDMI connections can simplify system operation and improve your TV sound.

What is ARC?

ARC (Audio Return Channel) was introduced in 2009. It enables a single HDMI cable to carry picture and sound from a receiver to a TV and an audio signal from the TV back to the receiver or sound bar. If both devices have ARC, you don’t need a separate audio cable to hear the TV sound through your receiver or sound bar.

Audio return channel via optical digital cable

Without ARC, you need both HDMI and optical digital audio connections between your TV and your sound bar.

Audio return via ARC on HDMI

With ARC, all you need is an HDMI connection between your TV and your sound bar.

One less cable might not sound like such a big deal, but it does solve a problem for people who want to wall-mount their TV and hide the cables behind the wall.

ARC vs eARC
ARC eARC
Type of cable needed HDMI HDMI with Ethernet
Surround sound formats Compressed 5.1 (standard Dolby Digital & DTS) Uncompressed 5.1 and 7.1 (Dolby TrueHD & DTS-HD Master Audio), and immersive audio (Dolby Atmos & DTS:X)

What is eARC?

The new eARC (Enhanced Audio Return Channel) promises three substantial improvements.

  • Increased bandwidth, which allows the TV to pass advanced, uncompressed surround sound formats (including Dolby Atmos and DTS:X) along to the receiver or sound bar.
  • More reliable HDMI “handshakes” between devices, which means easier, more dependable operation. You may be able to get away with using fewer remote controls.
  • The mandatory Lip Sync Correction protocol ensures that the picture and sound always match up.

Is eARC is a game-changer for system configuration?

With eARC, a TV can deliver uncompromised audio signals to an eARC-equipped receiver. That begs the question: Should I connect my cable box (and other video sources) to the TV or the receiver/sound bar?

Making video source connections to the TV

Using the TV as the A/V Switcher

Connecting your video sources to the TV can make system operation easier.

If you only have a few sources, it makes more sense to connect through your smart TV. The advantage here is being able to use a television as your central hub, which simplifies the operation of your system. You’ll select sources using the TV’s remote, which should make your life easier.

And since eARC is capable of passing uncompressed surround sound, you won’t lose audio quality for choosing this route.

Making video source connections to the receiver or sound bar

Using a sound bar speaker as the A/V switcher

When you connect your video sources to your sound bar or receiver, you only need one HDMI connection to the TV. That simplifies a wall mount TV installation.

Most of today’s smart TVs have no more than four HDMI inputs. If you have more than four video sources, connect them all through the receiver. Connecting some to the TV and some to the receiver is a recipe for confusion.

If you plan to hang your TV on the wall, you’ll probably want to connect through the receiver, so you’ll only have to run one cable to the TV.

Complex systems that include multi-zone video typically use the receiver as the hub for all the connections.

Setting up an ARC connection

Setting up an ARC connection is simple, and only requires an HDMI cable. Follow the following steps to ensure a proper ARC connection.

  1. Make sure both your television and A/V receiver or sound bar have ARC-enabled HDMI ports.
  2. Connect one end of the HDMI cable to the “ARC” labeled port on your television.
  3. Connect the other end to your ARC port on your sound bar or receiver.
  4. Activate ARC output on your TV. This is most likely in the settings menu under “audio”.

ARC TV sound menu

Some devices automatically switch to ARC mode when the connection is made, but you may have to do it manually in your TV settings.

Do I need a new HDMI cable?

Chances are you do not need a new HDMI cable. As long as yours is 4K and HDR compatible with Ethernet, it shouldn’t have any trouble transferring the data.

Questions about HDMI ARC and eARC

Need help choosing the right A/V equipment? Our advisors know the gear we carry inside and out. They can recommend products you based on your needs.

Purchased components you’re having trouble with? We provide free lifetime tech support with every order. 

Call, email, or chat with one today.

  • Dan from CA

    Posted on 12/24/2020

    Can a single connection via eARC between TV and receiver support both downstream audio (for apps on smart TV) and upstream video (for sources like cable and DVD connected into the receiver)?

  • Ron from Plainfield, CT

    Posted on 11/30/2020

    I purchased a Sony Bravia A8H Oled tv along with a Denon S750H receiver but am not sure which one I should connect my Amazon firestick to. I am running a 4K HDMI cable from the tv to the receiver through the e/arc port. The firestick works when plugged into either one. Will one way give better picture and audio over the other? Ty!

    Emily S. from Crutchfield

    on 12/3/2020

    Hi Ron! Based on your sweet gear, I think you are fine either way. Personally, I'd probably plug it into the receiver, assuming that's where your other sources are going, as it's less confusing for switching inputs!
  • Steve from Spruce

    Posted on 11/29/2020

    I'm trying to hook up my tv through the 1 video and 2 audio ports what am I doing wrong I get nothing? Must I hook up through the HDMI? If so can I use a connector to go from my three RCA cables to an HDMI adapter cable?

    Emily S. from Crutchfield

    on 12/3/2020

    Hi Steve! It's hard to tell you how to hook things up without knowing your exact setup. Based on your mention of an HDMI adapter, though, it sounds like you might not have HDMI on one of your devices. In that case, you won't be able to take advantage of an ARC connection.

    If RCA is your only option, it sounds like you might be trying to connect an older device to a newer TV. In that case, you might need an adapter. If you are still having trouble, let us know. Every Crutchfield purchase comes with lifetime tech support. Good luck!

  • Paul from St. Petersburg

    Posted on 11/18/2020

    I am confused about the Ethernet component of EARC. Is a separate Ethernet cable needed to facilitate full uncompressed Atmos, DTS, etc or is an Ethernet connection interval to an HDMI cable connected between EARC enabled devices?

    Emily S. from Crutchfield

    on 12/3/2020

    Hi Paul! Recent HDMI cables have an Ethernet channel within them, so you do not need a separate Ethernet cable. I can definitely see why you'd be confused, though. Thanks for the question!
  • Steve Kershaw from Glen Burnie

    Posted on 9/21/2020

    Whoever invented HDMI and ARC should be ashamed of themselves. What a horrible confusing mess. Oh, and it doesn't work. Over three different systems in the last five years it's never worked right once. Not once.

  • Mario Aguilera Jr from Visalia

    Posted on 4/22/2020

    Purchased a Yamaha receiver hooked up to a Samsung TV using the ARC HDMI input/ output and cannot get sound to my surround sound, receiver display shows "decoder off" ??,music from my phone works fine using Bluetooth though

  • Paul from St Paul, MN

    Posted on 4/20/2020

    Will A/V Receivers and TV's be upgradable to eARC via firmware upgrades?

  • Michael from Georgetown

    Posted on 3/10/2020

    I have my equipment in a AV room near my home theater. I have all inputs (Directv, roku, ccvc, blueray) in that room and sent thru the receiver (Sony) to a new Samsung TV. It runs thru HDMI/Ethernet/HDMI cable setup (about 40 feet). I have ARC cables in and out of the Ethernet run, but not sure if the ARC is maintained in the Ethernet run. Anyway to tell? The Samsung is not responding to the video being sent.

  • FeRD from Bronx, NY, USA

    Posted on 3/7/2020

    @Kim from La Palma Typically, eARC systems are backwards-compatible with ARC, as shown in the labeling on the TV ports pictured ("eARC/ARC"). There are probably exceptions, but for the most part as long as both devices support ARC, they'll be able to negotiate the return channel. Of course, the eARC-capable device won't be able to use any of those enhanced features.

  • Kim from La Palma

    Posted on 2/27/2020

    The info presented is great but you failed to answer the question if your TV has ARC but your AV receiver has eARC or visa versa will it still work?

  • Eric Woodall from Sterling

    Posted on 12/15/2019

    THANK YOU for posting this. I had an amazingly frustrating week trying to get eARC to work with my Yamaha RX-A880 receiver and LG 55C9 TV. The only way I could get the TV to send audio from streaming services to the receiver was to run all video sources through the TV, then use eARC from the TV to my receiver. Only after I read your article could I get everything to work.