HDMI-ARC lets your TV send sound back to your receiver or soundbar instead of only receiving picture and sound from other devices

HDMI-ARC stands for HDMI Audio Return Channel. On a normal HDMI cable, video and sound travel one direction — from your streaming device, game console, or cable box into your TV. HDMI-ARC reverses that path for audio only, letting your TV send sound back out through the same cable to a soundbar or receiver. This matters because your TV's built-in speakers are usually thin, and a separate speaker system sounds much better.

The practical difference: without HDMI-ARC, you need two separate cables — one HDMI from your device to the TV for picture, and one optical or analog cable from the TV to your soundbar for sound. With HDMI-ARC, one HDMI cable does both jobs. Your TV receives the picture from your streaming device, then sends the audio back out to your soundbar through the same cable.

Not every HDMI port on your TV supports ARC. Usually it is the port labeled HDMI 3 or HDMI 4, sometimes marked with "ARC" or "eARC" next to the label. Check your TV's manual or the ports themselves — the label is often printed directly on the TV's back panel.

Key Takeaways

  • HDMI-ARC sends audio from your TV back to a soundbar or receiver through a single HDMI cable, eliminating the need for a separate audio cable.
  • Only one or two HDMI ports on your TV support ARC — usually HDMI 3 or HDMI 4 — so you must use the correct port for it to work.
  • Both your TV and your soundbar or receiver must support HDMI-ARC for the connection to function; older devices may not have this feature.
  • HDMI-eARC is a newer, faster version that handles higher-quality audio formats, but regular HDMI-ARC works fine for most home setups.

How HDMI-ARC actually works in your setup

When you connect a soundbar or receiver to your TV's ARC port, the devices negotiate which one will control the audio. Your TV becomes the "source" — it collects sound from everything plugged into it (streaming apps, cable boxes, game consoles) and sends that audio back to the soundbar. The soundbar becomes the "sink" — it receives the audio and plays it.

This only works if you plug your other devices into the TV, not directly into the soundbar. For example: your Roku or Apple TV plugs into HDMI 1 on the TV, your game console plugs into HDMI 2, and your soundbar plugs into the ARC port (usually HDMI 3 or 4). The TV collects all the sound from HDMI 1 and 2, then sends it backward through HDMI 3 to the soundbar.

If you plug a device directly into your soundbar instead of the TV, HDMI-ARC cannot send that audio back — the soundbar is already receiving it directly. This is why some people keep one HDMI input on their soundbar for devices they use constantly, and use HDMI-ARC for everything else.

HDMI-ARC versus HDMI-eARC: which one you have

HDMI-eARC (enhanced Audio Return Channel) is a newer version released around 2017. It works the same way as regular HDMI-ARC but handles more audio formats and sends data faster. For most people watching streaming TV and movies, the difference is invisible — both versions work fine.

The formats matter if you watch movies with advanced soundtracks. Regular HDMI-ARC handles stereo and basic surround sound (Dolby Digital 5.1). HDMI-eARC also handles Dolby Atmos and DTS:X, which are object-based audio formats that create more precise sound placement. If your soundbar or receiver supports Atmos and your streaming service sends Atmos audio, eARC will pass it through; regular ARC will downgrade it to regular surround sound.

Check your TV's manual or settings to see which version you have. Most TVs made after 2018 have eARC. If your TV is older, it probably has regular ARC or no ARC at all. Either way, the connection works the same — you just get fewer audio options with regular ARC.

Setting up HDMI-ARC on your TV and soundbar

First, plug your soundbar or receiver into the correct HDMI port. Look at the back or side of your TV for the port labeled ARC or eARC — if there is no label, check your TV's manual to find which port it is. Plug the soundbar's HDMI cable into that port, not any other HDMI input.

Next, turn on both devices and go into your TV's settings. Look for an audio or sound menu — the exact name varies by brand (Samsung calls it "Sound Output", LG calls it "Audio", Roku calls it "Audio"). Find the option for HDMI-ARC or HDMI eARC and turn it on. Some TVs have this enabled by default; others require you to switch it on manually.

Then check your soundbar's settings. Most soundbars have a button or menu option to select the input source. Switch it to HDMI or HDMI-ARC. Some soundbars do this automatically when they detect an ARC connection; others require you to select it manually. Consult your soundbar's manual if you are unsure.

Finally, test it: play something on your TV (a streaming app, cable box, or game) and check whether sound comes from the soundbar. If nothing happens, go back to your TV's audio settings and confirm HDMI-ARC is actually turned on — it is the most common reason the connection fails.

When HDMI-ARC does not work and how to fix it

The most common problem is that HDMI-ARC is disabled in your TV's settings. Even if you plugged everything in correctly, your TV might have the feature turned off. Go back into your TV's audio or sound settings and look for HDMI-ARC, eARC, or "Audio Return Channel". Turn it on if it is off.

The second most common problem is using the wrong HDMI port. Your TV has only one or two ports that support ARC — usually HDMI 3 or HDMI 4. If you plugged your soundbar into HDMI 1 or HDMI 2, it will not work. Unplug the soundbar and move it to the correct port, then test again.

If your TV and soundbar are both old, one or both might not support HDMI-ARC at all. Check your TV's manual or the manufacturer's website to confirm it has ARC. If it does not, you will need to use an optical cable or analog RCA cables instead — these are older connection types that still work fine, just with an extra cable running from your TV to your soundbar.

Some soundbars have a firmware update available that adds or fixes HDMI-ARC support. Check the soundbar manufacturer's website or the soundbar's settings menu to see if an update is waiting. Updating can sometimes solve connection problems that were not there before.

HDMI-ARC versus optical and analog audio cables

Before HDMI-ARC existed, people connected soundbars using optical cables (also called TOSLINK) or analog RCA cables. Optical cables are thin and carry digital sound; RCA cables are the red and white connectors that carry analog sound. Both still work, and many people use them today.

HDMI-ARC is cleaner because it uses one cable instead of two, and it can handle more audio formats. But optical and RCA cables are simpler — they have fewer settings to configure, and they work with older TVs and soundbars that do not have HDMI-ARC. If your TV does not have ARC, or if your soundbar does not support it, optical or RCA is your only option.

Some people use both: HDMI-ARC for everyday streaming, and an optical cable as a backup for devices that do not work with ARC. This is a valid setup, though it means managing two cables instead of one.

Devices that work with HDMI-ARC

Almost any soundbar or receiver made in the last ten years supports HDMI-ARC. Budget soundbars, mid-range models, and high-end receivers all have it. The limiting factor is usually your TV — if your TV does not have an ARC port, the soundbar's ARC feature is useless.

Streaming devices like Roku, Apple TV, Amazon Fire Stick, and Google Chromecast do not need to support HDMI-ARC themselves. They just plug into your TV's regular HDMI ports, and the TV handles sending their audio to the soundbar through ARC. Game consoles (PlayStation, Xbox, Nintendo Switch) work the same way.

Cable boxes and satellite receivers also work with HDMI-ARC as long as they plug into your TV. The TV receives the picture and sound, then sends the audio back to the soundbar. This is actually one of the main reasons HDMI-ARC exists — it lets you use one soundbar for everything without needing separate cables for each device.

Frequently Asked Questions

Do I need HDMI-ARC if I have a soundbar with HDMI inputs?

Not necessarily. If your soundbar has HDMI inputs, you can plug some devices directly into it instead of the TV. But HDMI-ARC is still useful for devices you want to plug into the TV (like a cable box), and it simplifies your setup by using one cable instead of two. Many people use both — some devices go to the soundbar's HDMI inputs, and others go to the TV with audio returning through ARC.

Can I use HDMI-ARC with a TV that does not have it?

No. If your TV does not have an ARC port, you must use an optical or RCA cable instead. Check your TV's manual or look at the back panel — if there is no port labeled ARC or eARC, your TV does not support it. Optical cables work just as well; they just require a separate cable running from your TV to your soundbar.

Will HDMI-ARC work if my soundbar is older?

Older soundbars may not support HDMI-ARC at all. Check your soundbar's manual or the manufacturer's website to confirm it has this feature. If it does not, use an optical or RCA cable instead. Some older soundbars can be updated with firmware that adds HDMI-ARC support — check the manufacturer's website to see if an update is waiting.

What is the difference between HDMI-ARC and HDMI-eARC in real use?

For most people, there is no practical difference. Both send audio from your TV to your soundbar through one cable. HDMI-eARC handles more advanced audio formats like Dolby Atmos, but regular HDMI-ARC works fine for streaming TV, movies, and games. You only notice the difference if you watch content with Atmos audio and your soundbar supports it.

Why is my HDMI-ARC connection not working even though everything is plugged in?

The most common reason is that HDMI-ARC is disabled in your TV's settings. Go into your TV's audio or sound menu and look for HDMI-ARC or eARC — turn it on if it is off. Also confirm you are using the correct HDMI port (usually HDMI 3 or 4, not HDMI 1 or 2). If both are correct and it still does not work, try unplugging both devices for 30 seconds, then plugging them back in.