ARC stands for Audio Return Channel, while eARC means Enhanced Audio Return Channel. Both send sound from a TV to a soundbar or receiver using an HDMI cable. ARC is found on most modern TVs and soundbars, while eARC is a newer, upgraded version. The main difference is that eARC supports higher-quality sound formats like Dolby Atmos in full resolution. This makes eARC ideal for home theatres, while ARC is often enough for casual viewing.
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What is HDMI
HDMI, or High-Definition Multimedia Interface, is a cable and port that carries audio and video between devices. It connects TVs, soundbars, gaming consoles, laptops, and media players.
Here are some key points about HDMI:
- HDMI sends both video and audio through one cable, making setup simple.
- It supports high-definition video, from 720p up to 8K resolution.
- HDMI carries surround sound formats like Dolby Digital and DTS.
- It allows devices to talk to each other using a feature called CEC, so you can use one remote.
- Modern HDMI versions support fast refresh rates, which are important for gaming.
- HDMI cables are widely available and work with most entertainment systems.
What is ARC
ARC, or Audio Return Channel, is a feature of HDMI that simplifies how sound travels between devices. It reduces the need for multiple cables.
Here are some key points about ARC:
- ARC lets your TV send sound back to a soundbar or AV receiver.
- It uses the same HDMI cable that carries video, so you do not need extra cables.
- ARC supports surround sound formats such as Dolby Digital and DTS.
- It allows TV remote control to manage soundbar volume with HDMI-CEC.
- ARC works well for streaming apps like Netflix, Prime Video, or YouTube.
- It does not support the highest-quality sound formats like uncompressed Dolby TrueHD or full Dolby Atmos.
Differences between ARC and eARC
Feature
|
ARC
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eARC
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Audio quality
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Supports compressed audio formats
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Supports uncompressed, high-resolution audio like Dolby Atmos and DTS:X
|
Bandwidth
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Limited bandwidth
|
Much higher bandwidth for better sound transmission
|
Compatibility
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Found on most TVs and soundbars
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Available mainly on newer, high-end devices
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Latency
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May have slight audio delays
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Reduces delays and keeps sound and video in sync
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Connectivity
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Works with standard HDMI cables
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Best performance with HDMI 2.1 cables
|
If you are planning to upgrade, compare TV prices to find the right match. You can also explore Haier TVs that support ARC and eARC.
Benefits of HDMI eARC
- Uncompressed audio formats: Experience Dolby TrueHD, DTS:X, and other rich audio formats for immersive sound.
- Improved audio synchronisation: eARC removes delays and keeps audio perfectly in line with video.
- Simplified connections: One HDMI cable handles both audio and video with ease.
- Higher bandwidth: Extra bandwidth allows smooth transfer of heavy audio data without distortion.
- Future-proof technology: Devices with eARC support the latest and upcoming audio standards.
For a smooth sound and viewing experience, using eARC on compatible devices like TCL TVs helps you enjoy its full potential.
Devices supporting eARC
- Smart TVs: Most premium smart TVs in recent years include HDMI eARC for strong audio output.
- Soundbars: High-end soundbars with Dolby Atmos or DTS:X often come with eARC support.
- AV receivers: New receivers with HDMI 2.1 can pass uncompressed audio using eARC.
- Gaming consoles: Latest consoles support eARC, offering immersive in-game sound.
- Streaming devices: Some advanced streaming sticks also allow high-resolution audio through eARC.
Always check that your devices support eARC so you get clear and synchronised sound.
Choosing the right option for your setup
The choice between HDMI ARC and eARC depends on your needs and devices. If you mainly watch shows on platforms like Netflix or Prime Video, ARC is usually enough. It supports standard formats such as Dolby Digital, which work well on soundbars and entry-level receivers.
If you are serious about sound or planning a home theatre, eARC is the better option. It supports uncompressed formats like Dolby TrueHD and DTS:X, giving you cinema-like quality. Since eARC is also future-ready, it works with new audio technologies as they arrive.
For the best results, ensure your TV, soundbar, or AV receiver has HDMI 2.1, as it is key for using eARC fully.
Whether you pick a premium Samsung LED TV or upgrade your audio system, choosing eARC-compatible devices ensures seamless and high-quality entertainment.
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