HDMI versions and limits
Not all HDMI ports are equal. Version determines what works.
Version basics
- HDMI 1.4. Supports 4K at 30Hz. No HDR.
- HDMI 2.0. Supports 4K at 60Hz. HDR support.
- HDMI 2.1. Supports 4K at 120Hz, 8K at 60Hz. eARC, VRR.
ARC and eARC
- ARC sends audio from TV to soundbar over HDMI. Limited formats.
- eARC supports lossless audio. Requires HDMI 2.1 on both devices.
- Check which HDMI port on the TV supports ARC. Usually only one.
Cable rules
- High Speed cables handle up to HDMI 2.0 features.
- Ultra High Speed cables needed for HDMI 2.1 features.
- Cable length matters. Over 3m may need active cable for 4K 120Hz.