HDMI versions and limits

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.

Recommended gear

Ultra High Speed HDMI cableShop on Amazon → HDMI 2.1 splitterShop on Amazon → HDMI to DisplayPort adapterShop on Amazon →