When setting up a new TV or soundbar, you’ll need a variety of cables. While most people use old HDMI cables, HDMI ARC and eARC ports offer enhanced audio capabilities.
So, what’s the difference between HDMI ARC and eARC? Which one should you choose? And are they better than standard HDMI ports?
Let’s dive into HDMI ARC and eARC, compare their audio quality, and discuss the downsides of each to help you make an informed decision.
The HDMI superhighway
Before looking at HDMI ARC/eARC, let’s understand HDMI’s purpose: it transmits digital video and audio from one device to another through a single cable. Initially, this transmission was unidirectional, until HDMI 1.4 introduced support for bidirectional communication via HDMI ARC.
ARC: Audio return channel
Audio return channel (ARC) enables a TV to send audio back to the source device via an HDMI cable, simplifying audio setup. It eliminates the need for additional cables when using the TV’s built-in apps or tuners with external audio devices.
Better sound
HDMI ARC can transmit high-quality surround sound formats like Dolby Atmos, enhancing your audio experience. However, TV compatibility with these formats is essential for successful transmission.
Simpler switching
HDMI ARC streamlines audio switching between TV sources, eliminating the need for manual input changes on your sound system.
eARC: Making ARC even better
Enhanced Audio Return Channel (eARC) offers more bandwidth, supporting lossless hi-res audio formats like Dolby TrueHD. This is ideal for audiophiles seeking superior audio quality.
When would I use eARC?
eARC is beneficial for users connecting all their devices to the TV instead of external sound systems, particularly with Dolby Atmos-capable speakers lacking HDMI inputs.
Are there any downsides to using ARC/eARC?
There are minimal downsides to using ARC/eARC, especially with eARC offering advanced audio features and improved compatibility. However, device support and HDMI port limitations may affect setup.
Should my next TV, soundbar, or AV receiver be equipped with HDMI eARC?
For future-proofing your home audio setup, opting for devices with HDMI eARC is recommended. It ensures compatibility with the latest audio formats and technology advancements.
I’ve also heard about HDMI 2.1 — is this the same thing?
HDMI 2.1 encompasses HDMI eARC functionality, but device manufacturers may selectively implement HDMI 2.1 features. Look for specific eARC labels on devices to ensure compatibility.
