HDMI Audio Return Channel (ARC) lets a television send audio from built-in apps and connected sources to an HDMI soundbar through one cable, while also allowing volume control with the TV remote. Enhanced Audio Return Channel (eARC) provides greater bandwidth for supported high-quality and immersive formats, such as Dolby Atmos, while ARC remains a practical option for compatible televisions and soundbars.

HDMI soundbars can connect to a television through HDMI Audio Return Channel (ARC) or Enhanced Audio Return Channel (eARC), sending audio from built-in TV apps and connected devices through one cable while allowing TV remote volume control. Models with HDMI inputs can also accept sources such as streaming devices, Blu-ray players, and game consoles, while optical, analog, USB, or Bluetooth connections may provide additional setup options.

When comparing HDMI soundbars, look for support for Dolby Atmos, DTS:X, Dolby Digital, DTS decoding, and other 3D or spatial audio formats that match the source devices and content. Also compare surround features such as up-firing or elevation drivers, side-firing speakers, virtual surround processing, dialogue enhancement, and options to add a wireless subwoofer or surround speakers.

When mounting an HDMI soundbar, consider placement under the TV or on the wall, available clearance, and mounting hardware such as a compatible bracket, keyhole mount, or included wall-mount kit. Use HDMI Audio Return Channel (ARC) or Enhanced Audio Return Channel (eARC) for a single-cable connection that can carry TV audio and, on compatible setups, volume commands, with control options that may include the TV remote, an infrared remote, Bluetooth, or a mobile app.