HDMI 2.1 Audio Extractor 4K120Hz HDMI to Optical + 3.5mm - Flexible

In this review of the HDMI 2.1 Audio Extractor, the bottom line is clear: this unit is for users who need to split high-bandwidth HDMI video while routing audio to separate systems. The reviewer found it especially useful for gamers and home theater builders who want up to 4K@120Hz video passthrough while sending sound to a soundbar, AVR, or headphones. It is a practical solution when a display or source lacks the preferred audio outputs or when you want simultaneous HDMI audio and optical or analog feeds.

Key Features

• 4K@120Hz passthrough: Supports high-refresh video up to 4K at 120Hz so consoles and PCs keep full motion performance while audio is handled separately.
• Multiple audio outputs: Extracts audio to optical/SPDIF and 3.5mm analog so you can connect a soundbar, receiver, or headphones without changing the HDMI chain.
• Advanced format support: Handles Dolby Vision, HDR10+, Dolby Atmos and multi-channel formats so compatible content keeps its spatial and dynamic audio when passed through.
• ARC support: Audio Return Channel lets compatible TVs send audio back to a non-ARC sound system when ARC is enabled, simplifying connections in a living-room setup.
• Robust build and cabling guidance: Metal enclosure for heat dissipation and a recommendation for certified HDMI cables up to 10 ft gives confidence in reliability for long sessions.

Who It's For

This extractor is aimed at gamers using modern consoles or gamers with 4K@120Hz displays who need dedicated analog or optical audio feeds for legacy receivers, headphones, or soundbars. It also suits AV hobbyists building a mixed system where the display and audio components come from different generations.

People who should look elsewhere are those who need native upscaling, an HDMI matrix, or built-in DSP for room correction; this device focuses on audio extraction and passthrough rather than advanced switching or processing.

Pros & Cons

Pros

• Supports high bandwidth HDMI 2.1 features including 48Gbps and Dolby Vision so video quality is preserved.
• Provides flexible outputs: 3.5mm analog for stereo, optical for 5.1 Dolby Digital/DTS, and full HDMI for high-resolution formats.
• Solid metal housing for better heat dissipation and durable use in persistent gaming or home theater setups.

Cons

• Does not replace a full audio processor or AVR; it extracts and passes formats but does not offer room correction or advanced audio configuration.

Specifications

Product type	HDMI 2.1 audio extractor / splitter
Video support	Up to 4K@120Hz, backwards compatible with 1080P/720P
Audio outputs	Optical/SPDIF (toslink), 3.5mm AUX, HDMI ARC
Audio formats	2CH LPCM/PCM via 3.5mm, 5.1 Dolby Digital/DTS via optical, Dolby HD/DTS HD/Dolby Atmos via HDMI
Bandwidth	Up to 48Gbps
Power	DC 5V/1A adapter included (AC 100-240V 50/60Hz)
Build	Solid metal enclosure; supports certified HDMI cables up to 10 ft

Our Verdict

The HDMI 2.1 Audio Extractor is a focused, good-value utility for anyone needing reliable audio extraction while preserving modern HDMI video features. Its support for high-bandwidth video, multiple audio outputs and advanced formats makes it a sensible addition to gaming and home-theater setups that require separate audio routing without replacing existing equipment.

Frequently Asked Questions

Can this extractor pass Dolby Atmos?
Yes, Atmos and other high-resolution formats can pass through the HDMI output to compatible receivers while optical will carry standard 5.1 Dolby Digital/DTS.

Will it work with my TV ARC?
Yes, the unit supports ARC so a TV can send audio back to a non-ARC system if the TV ARC function is enabled.

Does the 3.5mm jack provide multi-channel audio?
No, the 3.5mm analog jack provides 2CH LPCM/PCM stereo; multi-channel is available via optical or HDMI.