HDMI ARC sends audio from your TV to a soundbar or AV receiver over the same HDMI cable used for the display. HDMI eARC is the higher-bandwidth version: it can carry uncompressed multichannel PCM and lossless formats such as Dolby TrueHD, DTS-HD Master Audio, and compatible Dolby Atmos or DTS:X. ARC is usually sufficient for built-in streaming apps; eARC matters when you want lossless or uncompressed audio from a console, PC, UHD Blu-ray player, or media server.
ARC and eARC at a glance
| Feature | HDMI ARC | HDMI eARC |
|---|---|---|
| Approximate maximum audio bandwidth | 1 Mb/s | 37 Mb/s |
| Stereo PCM | Yes | Yes |
| Compressed 5.1 | Yes | Yes |
| Uncompressed 5.1/7.1 PCM | Generally restricted | Yes |
| Dolby Digital Plus | Commonly supported | Yes |
| Dolby Digital Plus with Atmos | Often possible, device-dependent | Yes, if all devices support it |
| Dolby TrueHD, DTS-HD Master Audio | No through the ARC return path | Yes, with compatible equipment |
| Lossless Dolby Atmos and DTS:X | No through ARC’s return path | Yes, with compatible equipment |
| Control and volume | Usually HDMI-CEC | HDMI-CEC remains available |
The bandwidth figures and format comparison come from HDMI Forum and HDMI specifications (HDMI Forum presentation; HDMI eARC specification). These are transport capabilities, not guarantees that every television or soundbar passes or decodes every listed format.
What “audio return” means
In a conventional HDMI connection, a player sends video and audio to the TV. ARC reverses the audio direction: the TV sends sound back out through its designated HDMI port to a soundbar or receiver. That audio can come from built-in streaming apps, broadcast or cable input, or devices plugged into the TV’s other HDMI inputs.
Use the TV port marked HDMI ARC or HDMI eARC and the soundbar or receiver port marked HDMI OUT (ARC/eARC), TV-ARC, or TV eARC. The return connection carries audio, not video from the soundbar to the TV; a soundbar’s HDMI output can carry video from its own inputs, but ARC/eARC specifically describes the audio path back to the audio device.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minute#1 Best Overall
- Top Technology----8K@60HZ: This 8K Ultra High Speed HDMI Cable uses the most cutting-edge technology, is compatible with 8K@60HZ and 4K@120HZ, clearly displays every particle, and accurately processes every signal source.
- Upgrade Revolution: Highwings Ultra High Speed HDMI Cable supports 48Gbps (6GB/s) which can will no longer be stuck or dropped frames when watching video. It is also backward compatible with HDMI 2.0b/2.0a/1.4/1.3/1.2/1.1 versions.
- For Game Enthusiasts: This 8K Ultra High Speed HDMI Cable can achieve a super smooth picture of 4K@120HZ. Its latest game mode supports variable refresh rate, maximizes the value of the graphics card and CPU to obtain a smoother and more detailed picture.
- Reinforced high-quality materials: This 8K HDMI Cord uses Highwings' most popular classic style. The tail's anti-bending design has been upgraded to make it more durable. The military grade tensile nylon material also greatly extends its life.
- The ultimate perfectionist: Highwings every parts of the cable has been put through rigorous the performance tests in the laboratory. After we've combined every flawless part into a perfect 8K cable and it can be presented to you.
ARC and HDMI-CEC
ARC commonly relies on HDMI-CEC for device discovery, power behavior, and volume control. Manufacturers use different names: Samsung calls it Anynet+, LG Simplink, Sony Bravia Sync, and Panasonic Viera Link. Enable the brand’s CEC setting on both devices if automatic switching or remote volume control does not work.
What eARC adds
eARC substantially expands the return channel. HDMI describes support for up to 192 kHz/24-bit audio, uncompressed 5.1 and 7.1, up to 32 channels, Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, and DTS:X (HDMI eARC documentation). Sony also cites the approximately 37 Mb/s capacity and Atmos support (Sony support).
That does not make eARC an audio-enhancement mode. It preserves formats that ARC cannot transport. If your content is stereo or compressed Dolby Digital Plus, changing to eARC may produce no audible difference.
Can ARC carry Dolby Atmos?
Sometimes. Atmos describes object-based audio, but it can be carried in different formats:
- Dolby Digital Plus with Atmos metadata: compressed and common in streaming; it often works over ARC when the TV and soundbar support it.
- Dolby TrueHD Atmos: lossless and common on UHD Blu-ray; it requires eARC or a direct connection from the player to an Atmos-capable soundbar or receiver.
- Dolby MAT Atmos: used by some consoles and Apple TV workflows; high-bandwidth versions may not pass through ARC.
- DTS:X and DTS-HD Master Audio: require eARC or direct source-to-audio-device routing when the signal exceeds ARC’s limits.
Apple warns that Apple TV 4K’s high-bandwidth Dolby Atmos does not work over ARC and recommends connecting the Apple TV directly to an eARC-capable soundbar or receiver when necessary (Apple support). A missing Atmos indicator can also reflect the app, subscription tier, region, TV settings, or a soundbar that does not display badges.
HDMI version, port labels, and cable requirements
Do not infer eARC solely from an “HDMI 2.1” label. A product can have HDMI 2.1 video features without eARC, or provide eARC on only one port. Conversely, ARC can appear on HDMI 2.0 equipment. Check the actual port marking and the model’s specifications for ARC or eARC.
Rank #2
- Top Technology--8K@60HZ: This 8K Ultra-High Speed 2.1 HDMI Cable uses the most cutting-edge technology, which is compatible with 8K@60HZ,4K@240HZ and 4K@120HZ clearly displays every particle, and accurately processes every signal source.
- Upgrade Revolution: Highwings Ultra High Speed HDMI Cable 2.1 8K supports 48Gbps (6GB/s) which can will no longer be stuck or dropped frames when watching video. It is also backward compatible with HDMI 2.0b/2.0a/1.4/1.3/1.2/1.1 versions.
- For Game Enthusiasts: This 8K Ultra High Speed HDMI Cable 2.1 can achieve a super smooth picture of 4K@120HZ. Its latest game mode supports variable refresh rate, maximizes the value of the graphics card and CPU to obtain a smoother and more detailed picture.
- Reinforced high-quality materials: This 8K HDMI Cord uses Highwings' most popular classic style. The tail's anti-bending design has been upgraded to make it more durable. The military grade tensile nylon material also greatly extends its life.
- The ultimate perfectionist: Highwings every parts of the cable has been put through rigorous the performance tests in the laboratory. After we've combined every flawless part into a perfect 8K cable and it can be presented to you.
eARC is associated with HDMI 2.1-era specifications, but the cable does not need to be marketed as an “HDMI 2.1 cable.” HDMI identifies certified cable categories, including High Speed HDMI with Ethernet and Ultra High Speed HDMI. HDMI says some older cables with Ethernet may work, but they are not certified for eARC operation (HDMI eARC guidance; HDMI cable guidance).
For a short TV-to-soundbar run, a good existing cable may work. For a replacement or an unstable installation, choose a certified cable with the official label. Choose Ultra High Speed certification when that same cable must also carry demanding video such as 4K/120 or 8K; eARC’s audio bandwidth alone does not require a 48-Gb/s cable.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Where should each source be connected?
Source to TV, then TV to eARC soundbar or AVR
This arrangement is convenient when you use TV apps, want the TV to switch among several HDMI sources, or the audio device has few inputs. It works only if the TV passes the source’s desired audio format and the soundbar or receiver can decode it.
Source directly to the soundbar or AVR
Use this route when the TV converts or blocks lossless Atmos, DTS:X, multichannel PCM, or another format. It is often the solution for a console, PC, UHD Blu-ray player, or Apple TV 4K. Confirm that the audio device passes the source’s video requirements, including resolution, refresh rate, HDR, Dolby Vision, VRR, or 4K/120. Apple notes that some Atmos-capable soundbars and receivers do not pass every HDR or Dolby Vision mode (Apple support).
Typical connection patterns
| Source | Preferred first check | Use direct connection when |
|---|---|---|
| TV streaming app | TV eARC/ARC to soundbar or AVR | The TV app or passthrough does not deliver the required format |
| Game console or PC | TV input to eARC if the TV passes multichannel audio | You need multichannel PCM or the TV downmixes it |
| UHD Blu-ray player | eARC path if the TV passes TrueHD | You need TrueHD Atmos/DTS-HD and the TV cannot pass it |
| Apple TV 4K | eARC path on a compatible system | High-bandwidth Atmos is blocked by ARC or TV passthrough |
Correct TV and soundbar setup
- Connect the TV’s labeled ARC/eARC port to the soundbar or receiver’s HDMI OUT/TV-ARC port.
- Select the soundbar’s TV, ARC, or eARC input if it does not switch automatically.
- Enable HDMI-CEC on both products for volume and power control.
- Set the TV speaker output to External speakers, HDMI ARC/eARC, or the manufacturer’s equivalent.
- Set digital audio output to Passthrough, Bitstream, Auto, or an equivalent setting rather than PCM stereo when you want surround formats.
- Set eARC to Auto or On if the TV does not enable it automatically.
- On a source device, select Bitstream, Auto, or multichannel output as appropriate.
- Play known multichannel or Atmos content and check the soundbar’s information screen; its display is useful but is not the only proof of correct decoding.
Menu names vary by brand. Dolby’s soundbar guidance also recommends the TV’s ARC/eARC port and bitstream output for Atmos setups (Dolby setup guide).
Compatibility limits
eARC TV with an ARC-only soundbar
The link normally falls back to ARC-level behavior if the devices negotiate compatibility. The ARC-only soundbar cannot receive eARC-only formats; Sony describes this as output limited to ARC-format specifications (Sony support).
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Rank #3
- Step into the Future with 8K: Experience the next level of visual clarity with our HDMI cable, boasting a bandwidth of 48 Gbps. It supports 8K@60Hz and 4K@120Hz, ensuring your HDMI needs are met for years to come. This ultra-high-speed HDMI cable is future-proof, making it the ideal choice for all your high-definition multimedia interface (HDMI) devices.
- Certified by HDMI Forum: Our product is among the first to be officially certified as an Ultra High Speed HDMI cable. It has been rigorously tested to shield against electromagnetic interference, guaranteeing that your HDMI cables won't disrupt your wireless devices and networks.
- Engineered for Enhanced Gaming: Our HDMI cables are compatible with PlayStation 5, Xbox Series X/S, and any device that supports HDMI source with 4K@120Hz as specified in HDMI. This includes devices running on Sony 8K UHD TVs, Apple TV, and Roku Ultra.
- Superior Quality Materials: Crafted with carbon steel connectors, gold connector pins, and a robust double-braided nylon finish, our HDMI cables are designed to last. These premium materials ensure that you can plug and unplug your HDMI cable 10,000 times without any issues.
- Package Contents: Your purchase includes an Ultra High Speed HDMI Cable, an 18-month warranty, a welcome guide, and our dedicated customer service. Experience enhanced performance from your HDMI cables with Anker.
eARC soundbar with an ARC-only TV
The television’s ARC capability is the limit. An eARC soundbar cannot upgrade the TV’s return channel.
Optical fallback
TOSLINK optical can handle stereo and some compressed surround formats, but it lacks HDMI-CEC integration and cannot carry the same high-bandwidth formats. Use it when HDMI negotiation is unreliable or the TV has no ARC, not for lossless multichannel audio.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting by symptom
No sound
- Verify that the cable connects the TV’s ARC/eARC port to the soundbar’s HDMI OUT/TV-ARC port.
- Select the soundbar’s TV/eARC input and enable CEC on both devices.
- Choose external speakers and Auto, Passthrough, or Bitstream audio output on the TV.
- Power off both devices, unplug them briefly, reconnect the cable, then turn on the TV first and the soundbar second.
- Try a different certified HDMI cable, a built-in TV app, and another source. Apply relevant firmware updates.
Surround content plays in stereo
- The TV or source may be set to PCM stereo.
- The app or title may not contain multichannel audio.
- The TV may be converting an unsupported format.
- The soundbar may be on the wrong input or unable to decode the format.
- The connection may have negotiated ARC instead of eARC.
Choose Bitstream, Auto, or Passthrough, enable multichannel output on consoles and PCs, and confirm that the HDMI device is identified correctly.
Atmos does not appear
- The title, subscription tier, or region may not provide Atmos.
- The TV app or passthrough may output only a lower format.
- PCM may be enabled.
- The soundbar may be ARC-only, or the TV may not pass the source’s Atmos format.
- The soundbar may decode Atmos without showing a badge.
Dropouts or HDMI handshake failures
Damaged cables, CEC conflicts, firmware bugs, unfavorable power-on order, and source-to-TV passthrough incompatibility are common causes. Turn off every HDMI device, disconnect the ARC/eARC cable, power-cycle the TV and soundbar, reconnect only those two devices, enable CEC and eARC, and add other sources one at a time.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Lip-sync delay
eARC provides improved capability discovery and synchronization features, but actual timing depends on the entire video-processing chain. First verify the connection and output mode, then use the TV’s or soundbar’s audio-delay control.
Video fails after a direct connection
The soundbar or receiver may not pass the source’s HDR, Dolby Vision, VRR, refresh-rate, or resolution mode. Move the source back to the TV and use eARC if the TV can pass the desired audio, or confirm every required video feature before routing the source through the audio device.
Rank #4
- Certified HDMI Cable: The package has an official HDMI certification label. HDMI Officially Certified Fully compliant with the HDMI Forum’s strict requirements as specified in HDMI
- It supports the latest features: 0.01ms, low EMI, SBTM, 48Gbps Bandwidth, ALLM, VRR, QMS, QFT, Dynamic HDR, HDR10+, CEC, HDCP 2.2 & 2.3, VESA DSC 1.2a
- Resolution & Deep Color: 10k@60Hz 12-bit, 8K@60Hz 4:4:4 12-bit, 5k@144Hz 120Hz 90Hz 4:4:4 12-bit, 4K@240Hz 120Hz 144Hz 12-bit, 2k@360H 240Hz 165Hz,1080p@360Hz, 720p, 480p
- Digital Audio Video Format Support: The latest high-bitrate audio formats are supported including eARC, ARC, DTS Master, DTS:X, Dol-by TrueHD, Dol-by Vision, Dol-by Atmos and more
- Wide Compatibility: Gaming PC, FreeSync, G-SYNC, All GeForce RTX 40&30 series, Soundbar, PS5 PS4 PS3, Xbox Series X, Xbox Series S, All Apple TV+, All OLED TV, All Mac-book, laptop, Projector, Monitor, Netflix, Fi-re TV, Ro-ku TV, SHIELD TV
When is eARC worth prioritizing?
ARC is enough when
- You mainly watch streaming services or broadcast TV.
- Your content is stereo or compressed 5.1/ Dolby Digital Plus.
- Your soundbar is a basic stereo or compressed-surround model.
- You want simple one-cable setup and HDMI-CEC volume control.
eARC is worth paying for when
- You want lossless Dolby Atmos, DTS:X, or Dolby TrueHD.
- You use UHD Blu-ray, a local media server, a gaming PC, or a console that outputs multichannel PCM.
- Your TV must serve as the HDMI switch for several demanding sources.
- You are buying a high-end soundbar or AVR with immersive speakers and want fewer format compromises.
eARC cannot compensate for poor speaker placement, room acoustics, limited speakers, or a TV that mishandles passthrough. A certified cable also cannot add eARC to ARC-only hardware.
Bottom line
Choose ARC for straightforward TV streaming and compressed surround. Choose eARC when your system must carry uncompressed multichannel PCM or lossless formats. Identify the source format, check the TV’s actual passthrough behavior, and treat the weakest device, port, cable, or decoder as the system’s limit. When the TV cannot pass the audio you need, connect the source directly to an eARC-capable soundbar or AVR—after confirming that it can also pass the required video.
Frequently Asked Questions
Is eARC backward-compatible with ARC?
Not automatically at the specification level. Compatibility depends on the TV and audio device; when one side is ARC-only, the connection normally operates within ARC’s format limits.
Can I use an old HDMI cable for eARC?
A quality existing cable may work, but older cable types are not necessarily certified for eARC. For replacement or troubleshooting, use a certified cable with Ethernet; use Ultra High Speed certification when demanding video also travels through it.
Why does my soundbar show Dolby Digital instead of Atmos?
The content may not include Atmos, the subscription or region may not provide it, the TV may be set to PCM or converting the signal, or the soundbar may not display an Atmos badge even while decoding it. Check the source format and passthrough settings.
Can a console connected to the TV still produce surround sound?
Yes, if the TV passes the console’s format through ARC/eARC. Multichannel PCM commonly requires eARC; otherwise connect the console directly to the soundbar or AVR and verify video passthrough.
Recommended Free Tools
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
