OREI eARC 4K 120Hz Audio Extractor – HDMI 2.1 Pass-Through, HDR10+, Dolby Atmos, Optical/Analog Outputs

The OREI BK-931 eARC 4K 120Hz Audio Extractor helps you reclaim premium sound from your TV or HDMI sources, delivering flexible routing to a soundbar or AV receiver. It extracts or passes through high-quality audio via HDMI/eARC while supporting Dolby Atmos, Dolby TrueHD, DTS-HD Master Audio, and more. Auto eARC detection makes switching between TV apps and external devices smooth and nearly invisible, so your home theater stays focused on the moment rather than the setup.

Key benefits at a glance

Designed for modern TVs and gaming consoles, this device bridges your source devices and audio system without compromising video quality. Expect clearer dialogue, more immersive spatial audio, and fewer headaches when switching between apps or devices during movie night or game sessions.

What you get

• BK-931 Audio Extractor
• 100–240V power adapter
• User manual

Video and audio capabilities

Built to handle next‑gen video, it supports up to 8K@60Hz and 4K@120Hz via HDMI 2.1 bandwidth (up to 48Gbps FRL). It remains HDCP 2.3 and DVI compliant, ensuring compatibility with a wide range of TVs, consoles, and players. HDR10+ and Dolby Vision are supported in the video path, while advanced audio formats latch onto the best possible sound, including Dolby Atmos, Dolby TrueHD, DTS-HD Master Audio, and more in the audio path.

Outputs and formats

Extract audio through HDMI, eARC, AMP, Optical, or Analog outputs. The device handles LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS:X, and related variants. Optical output supports PCM 2.0, Dolby Digital, and DTS 5.1, while Analog output provides PCM 2.0. This makes it useful for connecting soundbars, receivers, and some legacy audio systems.

Important notes and setup tips

• Optical port is limited to 5.1 channels and does not downmix 7.1 to 5.1.
• There is no built‑in volume control on the unit itself.
• For best results, connect the OUT TV port to an eARC‑compatible TV and the OUT Soundbar port to the soundbar’s input.
• Recommended HDMI cable: high‑quality Ultra HDMI 2.1 up to 10 feet for 8K resolution.

What’s included in the package and warranty

The BK-931 Audio Extractor is backed by a 1‑year warranty. The package includes the BK-931 unit, a compatible power adapter, and a user manual to help with quick setup and ongoing use.

Who it’s for

If you want to maximize audio from streaming apps, game consoles, or Blu‑ray players without sacrificing video quality, this extractor offers flexible routing and broad format support. It’s designed to be a practical solution for improving TV sound while keeping setup straightforward and cable clutter low.