Tendak HDMI Audio Extractor 4K@60Hz - HDMI to Optical and 3.5mm

In this review of the Tendak HDMI Audio Extractor, the bottom line is simple: it is for anyone who needs clean audio extraction from an HDMI source without compromising 4K video quality. The unit's main appeal is that it preserves up to 4K@60Hz video with HDR support while sending audio out over optical SPDIF, RCA L/R or a 3.5mm jack, and it adds a convenient analog volume knob. For setups where the display or source lacks a usable audio output, this converter is a practical, compact solution that balances compatibility and picture fidelity.

Key Features

• 4K@60Hz support: Preserves Ultra HD video up to 4Kx2K@60Hz with RGB 4:4:4 and YUV color formats so picture quality is maintained.
• Optical and analog outputs: Extracts digital audio to optical SPDIF for soundbars and surround systems while providing 3.5mm and RCA L/R stereo for headphones or powered speakers.
• Wide audio format handling: Accepts and passes AC-3, DTS, DTS-HD, Dolby TrueHD, DSD and LPCM 7.1 on compatible outputs for multichannel setups.
• HDR and HDCP compatibility: Supports HDR10 and both HDCP 2.2 and 1.4 so it works with modern 4K sources and displays.
• Volume control for analog out: A variable knob adjusts the 3.5mm and RCA output level directly, useful for headphones and powered speakers.
• Plug and play: No drivers required and the unit can be powered via the supplied USB cable or a 5V/1A adapter for stable operation.

Who It's For

The Tendak extractor is best for home theater users, gamers or anyone connecting a Blu-ray player, PS4, PS5, Xbox One, laptop or streaming device to a 4K TV while needing a separate audio feed to a soundbar or external speakers. It is especially helpful when the TV lacks a convenient optical out or when a receiver is not in the chain.

It is less suitable for users who require full control over digital audio routing inside an AV receiver or for systems that demand a single integrated HDMI ARC/eARC solution. Also, because a few customers reported intermittent audio on some setups, those with very specialized signal chains should test compatibility before full deployment.

Pros & Cons

Pros

• Keeps 4K@60Hz picture intact while extracting audio for separate systems.
• Multiple output options: optical SPDIF for surround and 3.5mm/RCA for analog devices.
• Handy analog volume knob that controls 3.5mm and RCA outputs together.
• Broad codec support including AC-3, DTS and LPCM formats for flexible playback.

Cons

• Some customers report mixed results with audio output on particular source/display combinations, so compatibility is not guaranteed for every setup.
• Requires external USB power if the HDMI source cannot supply sufficient current, adding a cable to the installation.

Specifications

Product type	HDMI 2.0 audio extractor
Video support	Up to 4Kx2K@60Hz, 4:4:4 / YUV 4:4:4 / YUV 4:2:2
Audio outputs	Optical SPDIF, 3.5mm AUX, RCA L/R
Audio formats	AC-3, DTS, DTS-HD, Dolby TrueHD, DSD, LPCM 7.1
HDCP / HDR	HDCP 2.2 & 1.4, HDR10 support
Power	USB cable included, DC 5V/1A compatible
Package includes	Extractor, optical cable, USB cable, user manual

Our Verdict

The Tendak HDMI Audio Extractor is a practical, budget-friendly tool for splitting audio from HDMI without sacrificing 4K video quality. It works well for most TVs, consoles and players and adds useful analog outputs plus a volume knob, making it good value for casual home theater upgrades. Users with complex AV racks or unusual source/display combinations should verify compatibility, but for straightforward setups this extractor delivers reliable performance and flexibility.

Frequently Asked Questions

Can it pass 4K@60Hz and HDR?
Yes. The unit supports 4Kx2K@60Hz with HDR10 and handles RGB/YUV 4:4:4 and YUV 4:2:2 color formats.

Which audio outputs offer multichannel sound?
Digital optical SPDIF can carry 5.1 or multichannel formats when supported, while the 3.5mm and RCA outputs provide stereo analog (2.0CH) with volume control.

Does it need external power?
It can be powered via the supplied USB cable from the HDMI source, but a DC 5V/1A adapter is recommended if the source does not supply enough power.