Difference between HDMI ARC & HDMI eARC

Published: 23 Sep 2025

When connecting your TV to a soundbar or home theater system, HDMI ARC and HDMI eARC are two common terms you’ll come across. Both allow audio to pass from your TV to external speakers using an HDMI cable. But what’s the real difference between ARC and eARC?

Difference Between HDMI ARC and HDMI eARC

In this article, we’ll focus only on the detailed differences between HDMI ARC and HDMI eARC. If you’re new to these terms, first check our guides:

Table of Content

HDMI ARC vs eARC: Comparison
HDMI ARC vs HDMI eARC – Comparison Table
Conclusion
FAQs

Lets dig in!

HDMI ARC vs eARC: Comparison

So, everyone here, we will cover what is the difference between HDMI ARC vs. eARC in great detail. Here I have listed all the possible comparisons that can differentiate both HDMI key terms:

Audio Quality
Audio Formats Supported
Bandwidth
Cable Compatibility
Lip Sync Correction
Device Compatibility
Ease of Setup
Control Features (CEC)
Backward Compatibility
Channel Support
Cost
Future-Proofing

Let’s look at all possible and unique differences between eARC and ARC one by one.

1. Audio Quality

Audio quality means how clear and rich the sound is. Good audio quality gives you sharp, clean, and detailed sound — just like hearing a live performance or being inside a cinema.

Better audio quality means:

Clearer sound
Deeper bass
Louder and more balanced audio
No unwanted noise or distortion

Now, let’s see how HDMI ARC and HDMI eARC affect audio quality.

Audio Quality in HDMI ARC

HDMI ARC gives basic sound quality.

It only supports compressed sound formats like Dolby Digital or DTS.
These formats are fine for regular TV watching or simple soundbars.
But some audio details may be lost because compression reduces sound quality.

Audio Quality in HDMI eARC

HDMI eARC gives high-quality, uncompressed sound.

It supports advanced sound formats like Dolby TrueHD, DTS-HD Master Audio, and Dolby Atmos.
These formats keep the full sound details without cutting or compressing them.
It feels like surround sound in a movie theater — more powerful and realistic.

The Main Difference

ARC compresses sound, so you lose some sound details.
eARC keeps the full original sound, so it is richer, clearer, and more powerful.
If you want the best sound experience, eARC is the better choice.

2. Audio Formats Supported

In the previous section, we talked about how audio quality changes with ARC and eARC. Now let’s understand which sound formats each one can handle.

Think of audio formats like different flavors of sound. Some are basic and simple, while others are rich and detailed.

Audio Formats in HDMI ARC

HDMI ARC works with standard audio formats — the common ones that most TVs and speakers understand.

These include:

PCM (2.0) – Very basic left and right channel sound
Dolby Digital (5.1) – Surround sound, but compressed
DTS (5.1) – Another type of surround sound, also compressed

These formats are okay for normal TV use, like watching news, YouTube, or regular movies. But the sound is not the best, especially for home theater systems.

Audio Formats in HDMI eARC

HDMI eARC is made for high-end sound systems. It supports both basic and advanced audio formats, including uncompressed formats.

These include:

PCM (5.1 and 7.1) – Clear multi-channel audio
Dolby TrueHD – Very rich, studio-quality sound
DTS-HD Master Audio – Powerful, high-definition sound
Dolby Atmos – Sound that moves around you, even above your head
DTS:X – 3D-style sound that surrounds you from every angle

These formats are used in modern movies, Blu-ray players, and soundbars. You get a more lifelike, cinematic sound.

The Main Difference

ARC is limited to basic formats, mostly compressed.
eARC can handle advanced formats, without compression.
So, if your speaker supports Dolby Atmos or DTS:X, you need eARC to enjoy them fully.

3. Bandwidth

Now let’s talk about another important difference between HDMI ARC and HDMI eARC — the bandwidth. Bandwidth means how much data (like sound signals) can travel through a cable in one second.

Simply:

Low bandwidth = less audio data = limited sound quality
High bandwidth = more audio data = better sound quality

Bandwidth of HDMI ARC

HDMI ARC has low bandwidth.

It can only carry small-sized audio data.
That’s why it only supports basic or compressed audio formats like Dolby Digital and DTS.
It can’t handle heavy audio signals like Dolby Atmos or DTS:X properly.

Result: You may miss out on advanced sound features.

Bandwidth of HDMI eARC

HDMI eARC has much higher bandwidth.

It can carry a large amount of audio data without cutting or compressing it.
That’s why it supports uncompressed formats like Dolby TrueHD, DTS-HD Master Audio, and 3D sound formats like Dolby Atmos.
The sound reaches your speaker in full quality, just as it was sent from the TV or device.

Result: You get a rich, detailed, and theater-like sound.

The Major Difference

ARC has low bandwidth, so it can’t handle advanced sound formats.
eARC has high bandwidth, so it can deliver full-quality, heavy audio formats without losing any details.

If you want high-quality audio performance, eARC is the better option — all because of its larger bandwidth.

4. Cable Compatibility

Cable compatibility means whether your current HDMI cable works properly with ARC or eARC. Not all cables support the same features, especially when it comes to high-speed audio transfer.

So, you need to know if your existing HDMI cable is enough, or you need a better one to use eARC features.

Cables Used with HDMI ARC

ARC works with almost any standard HDMI cable type.

Even older HDMI cables (version 1.4 or above) can support ARC.
So if your system uses ARC, you don’t need to buy a special cable.

Result: Easy and low-cost setup.

Cables Needed for HDMI eARC

eARC needs a better cable to perform at its best. While some high-speed HDMI cables may still work, the best option is a:

“High-Speed HDMI Cable with Ethernet” or
“Ultra High-Speed HDMI Cable” (recommended for full eARC features).

These cables support higher bandwidth and better audio data transfer.

Result: You might need to upgrade your cable to enjoy all the advanced sound formats with eARC.

The Major Difference

ARC works fine with old HDMI cables.
eARC may require a newer and faster HDMI cable for full support.
So if you switch to eARC, don’t forget to check your cable type — or you won’t get the full audio experience.

5. Lip Sync Correction

Lip sync means the audio and video should play together at the same time. For example, when a person talks on screen, you should hear their voice at the exact moment their lips move.

But sometimes, audio reaches your speakers a bit late, while the video is already on screen — this is called lip sync delay.

Lip sync correction is a feature that helps to fix this delay automatically.

Lip Sync Support in HDMI ARC

HDMI ARC does not have automatic lip sync correction.

If your sound and video get out of sync, you need to fix it manually from your TV or speaker settings (if available).
Not all devices support this manual correction properly.

Result: You might face sync issues, especially in fast-action scenes or with surround sound setups.

Lip Sync Support in HDMI eARC

HDMI eARC comes with built-in automatic lip sync correction.

It means your system can automatically match the sound with the video — no need to adjust settings manually.
Works better with modern TVs and sound systems.

Result: You get smoother, delay-free sound that matches the video perfectly.

The Major Difference

ARC may cause lip sync problems, and you need to adjust things manually.
eARC solves lip sync problems automatically, so you get a better viewing experience.

If you want perfect audio-video match without hassle, eARC is the winner here.

6. Device Compatibility

Device compatibility means how well HDMI ARC or eARC works with your TV, soundbar, home theater, or other audio/video devices. It also shows whether your existing setup can support the feature properly or not.

Device Compatibility with HDMI ARC

HDMI ARC is supported by almost all modern TVs, soundbars, and AV receivers.

It has been available since HDMI version 1.4, so even older devices may have an ARC port.
You don’t need a very advanced setup to use ARC — it’s quite universal and simple.

Result: ARC works easily with most standard audio systems.

Device Compatibility with HDMI eARC

HDMI eARC is a newer feature, available from HDMI version 2.1.

So, only new TVs and audio systems that support HDMI 2.1 can use full eARC features.
Some devices may have partial eARC support, but not all features will work unless both your TV and sound system are eARC-compatible.

Result: To use eARC, you may need to upgrade your devices.

The Major Difference

ARC works with many old and new devices — it’s widely available.
eARC only works with newer, HDMI 2.1-supported devices — limited to modern setups.
So if you’re using older equipment, ARC might be your only option. But if you have a new system or plan to upgrade, eARC gives better performance.

7. Ease of Setup

Ease of setup means how simple or complicated it is to connect and use HDMI ARC or eARC with your TV, soundbar, or home theater system.

Setup with HDMI ARC

ARC is easy to set up.

You just need a single HDMI cable between TV and sound system.
Most TVs detect the ARC connection automatically.
Even if manual settings are needed, they are usually simple and quick.

Result: ARC is beginner-friendly and works smoothly with most setups.

Setup with HDMI eARC

eARC setup is also simple, but sometimes needs:

A newer cable (Ultra High-Speed HDMI)
Compatible devices on both ends

Once connected, it works automatically and even offers better sound without extra settings.

Result: Setup is easy — just check your cable and device support first.

The Major Difference

Both are easy to set up, but ARC works with more devices and older cables, while eARC may need updated equipment and cables.
Once setup is done, eARC gives better sound performance with the same ease.

8. Control Features (CEC)

HDMI-CEC stands for Consumer Electronics Control. It lets you control multiple devices using one remote. For example:

You can use your TV remote to control the soundbar volume.
Turning off the TV also turns off the sound system.

HDMI ARC and CEC

ARC works together with HDMI-CEC.

You can control basic sound functions (volume, power) using your TV remote.
However, it may not always be smooth — depends on the brand and device support.

Result: Simple remote control options, but not always perfect.

HDMI eARC and CEC

eARC also works with HDMI-CEC.

In many setups, eARC and CEC work better together, giving more stable control.
Still, CEC performance depends on the devices, not just ARC or eARC.

Result: eARC supports better and smoother device control in most cases.

The Major Difference

Both support HDMI-CEC.
But eARC works more efficiently and reliably, especially with modern smart systems.
Still, remember: CEC depends more on your device brand than on ARC or eARC itself.

9. Backward Compatibility

Backward compatibility means whether a new technology can work with old systems or not. It helps you know if you can mix old and new devices in your setup.

Backward Compatibility in HDMI ARC

ARC doesn’t need backward compatibility — it’s already used by many old devices.

Older TVs and sound systems with HDMI 1.4 and above usually have ARC ports.
So, it’s very flexible with different systems.

Backward Compatibility in HDMI eARC

eARC is partially backward compatible.

If your TV has eARC but your soundbar only has ARC, they can still connect.
But: You will not get full eARC features — the system will work in ARC mode.

To enjoy full eARC benefits, both devices must support eARC.

Result: eARC can still work with older ARC devices, but with limited features.

The Major Difference

ARC is fully compatible with older systems.
eARC can work with ARC devices, but you lose the extra audio quality and bandwidth.
For best results, both TV and audio device should support eARC.

10. Channel Support

Channel support means how many separate audio channels (like left, right, center, surround, etc.) a system can handle. More channels mean richer and more immersive sound.

Example:

2.0 channels = Left + Right (basic stereo)
5.1 channels = Left + Right + Center + 2 Surround speakers + Subwoofer
7.1 channels or more = Even more advanced setups

Channel Support with HDMI ARC

ARC supports up to 5.1 channel audio.

It does not support high-quality uncompressed audio.
It is good for basic home theater setups, but not for advanced surround sound systems.

Result: Suitable for casual or small setups.

Channel Support with HDMI eARC

eARC supports up to 7.1 channels and beyond.

It can carry uncompressed and high-resolution audio, including formats like Dolby TrueHD and DTS-HD Master Audio.
Perfect for cinema-like experiences at home.

Result: Best for high-end and professional sound systems.

The Major Difference

ARC is limited to 5.1 channels with compressed audio.
eARC supports more channels and uncompressed audio, making it ideal for true surround sound lovers.

11. Cost

Now let’s talk about how much ARC and eARC setups can cost.

Cost of HDMI ARC Setup

ARC setups are usually cheaper.

Works with standard HDMI cables and older devices.
You don’t need to spend extra unless you want high-end speakers.

Result: Budget-friendly and affordable for basic needs.

Cost of HDMI eARC Setup

eARC setups can be more expensive. You may need:

Newer devices (TV, sound system) that support HDMI 2.1
Ultra High-Speed HDMI cables

But it’s worth it if you want top-level sound quality.

Result: Slightly higher cost, but better performance.

The Major Difference

ARC is cost-effective and simple.
eARC requires more investment, but gives premium audio quality.
Choose based on your budget and audio needs.

12. Future-Proofing

Future-proofing means how well your system can work with new technology in the coming years. If your setup is future-proof, you won’t need to upgrade soon.

Future-Proofing with HDMI ARC

ARC is already older technology.

It may not support newer audio formats and advanced features.
If you upgrade other devices in the future, ARC may become outdated.

Result: Not the best choice for future upgrades.

Future-Proofing with HDMI eARC

eARC is part of the latest HDMI 2.1 standard.

Supports modern audio formats, better syncing, and higher quality sound.
If you plan to upgrade your home theater later, eARC will stay relevant.

Result: A better long-term investment.

The Major Difference

ARC is good for now, but might not support new tech later.
eARC is future-ready, making it a smarter choice for those who want to upgrade later.

HDMI ARC vs HDMI eARC – Comparison Table

Guys, here is the quick comparison table for you to take a quick overview of both ARC and eARC:

Feature	HDMI ARC	HDMI eARC
Audio Quality	Compressed audio (lower quality)	Uncompressed, high-quality audio
Audio Formats Supported	Basic formats like Dolby Digital, DTS	Advanced formats like Dolby TrueHD, DTS-HD MA
Bandwidth	Limited bandwidth	Higher bandwidth for better sound
Cable Compatibility	Works with regular HDMI cables	Needs Ultra High-Speed HDMI cable
Lip Sync Correction	Basic sync, sometimes manual	Automatic and more accurate syncing
Device Compatibility	Works with most TVs and soundbars	Needs devices with HDMI 2.1 support
Ease of Setup	Very simple and beginner-friendly	Also simple, but may require newer devices
Control Features (CEC)	Supports HDMI-CEC (basic remote control)	Better and more stable CEC performance
Backward Compatibility	Compatible with older devices	Works with ARC devices, but features limited
Channel Support	Up to 5.1 channel audio	Up to 7.1 or more channels
Cost	Budget-friendly	Slightly expensive due to new tech
Future-Proofing	Older technology, limited future use	Modern and future-ready

Conclusion

So guys, in this article, we have covered HDMI ARC vs eARC in great detail. We discussed all the main differences like audio quality, formats, bandwidth, cable types, cost, and more. If you’re planning a basic setup, ARC might be enough. But if you want high-quality sound and a future-ready system, go for eARC.

Also, don’t forget to check out the FAQs section below—it covers a lot of common confusions you may still have in mind.

FAQs

Here are some of the most commonly asked questions related to hdmi earc vs arc:

Is eARC better than ARC?

Yes, eARC is better than ARC. It gives you higher sound quality and supports advanced audio formats like Dolby TrueHD and DTS-HD. eARC also provides better syncing and more audio channels. It is designed for modern TVs and sound systems.

Is ARC and eARC the same?

No, ARC and eARC are not the same. ARC is the older version with fewer features and lower sound quality. eARC is the upgraded version with better performance, more audio format support, and faster data transfer.

What HDMI cable for eARC?

For eARC, you need an Ultra High-Speed HDMI cable. This cable supports the higher bandwidth that eARC needs to send high-quality sound. Regular HDMI cables may not give you full eARC features. So, always choose a certified Ultra High-Speed HDMI cable for the best results.

Will eARC work with ARC?

Yes, eARC can work with ARC, but only with basic functions. You won’t get high-quality sound or advanced features if one device is ARC and the other is eARC. The connection will still work, but only like normal ARC. For full benefits, both devices should support eARC.

Is HDMI ARC compatible with HDMI eARC?

Yes, HDMI ARC is compatible with HDMI eARC, but the features will be limited. You can still connect the devices, but only the ARC-level features will work. Advanced sound quality and formats from eARC won’t be available in this case. For the best performance, both devices should have eARC.