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Compact black aluminium box with HDMI ARC input and optical, coaxial plus 3.5 mm audio outputs

LUOM

LUOM HDMI ARC Audio Extractor Splitter Converter 192KHz Coaxial Stereo Optical 3.5mm

SKU CH-2WKN-8W4PD

Extracts TV audio via ARC to optical, coaxial or 3.5 mm outputs with 192 kHz / 24-bit sampling and digital noise reduction

  • First connector1 x HDMI ARC input
  • Second connector1 x Optical, Coaxial, 3.5 mm jack output
  • Product typeAudio Signal Converters
  • In the box1 x Audio Adapter 1 x Type-c power cable 1 x Users Manual
  • Extracts TV audio via HDMI ARC to soundbar or amplifier
  • Supports 192 KHz sampling with 24-bit stereo channels
  • Outputs digital optical, coaxial and 3.5 mm analog simultaneously
  • Built-in CEC volume control works with TV remote
  • Plug-and-play aluminium enclosure with digital noise reduction

HDMI ARC Audio Extractor for TV Sound Systems

This LUOM converter extracts audio from a TV HDMI ARC port and sends it to external soundbars, amplifiers or home-theatre receivers. It is designed for viewers whose television lacks direct digital or analogue outputs but does provide an ARC-enabled HDMI socket. The unit requires no drivers and operates plug-and-play once powered via the included USB-C cable.

Limits of the ARC Interface

The television must have an HDMI ARC port; a standard HDMI input without ARC will not pass audio to this device. Optical and coaxial outputs carry PCM 5.1 or LPCM 2.0 streams, while the 3.5 mm jack is restricted to PCM or LPCM stereo only. Sampling rates supported are 32, 44.1, 48, 96 and 192 kHz at 24-bit depth, and an HDMI 2.0 cable is recommended for reliable transmission.

192 kHz Sampling Rate with CEC Volume Control

The built-in CEC protocol lets the TV remote adjust the extractor's output volume directly, removing the need for a separate remote. This single specification — 192 kHz maximum sampling with CEC volume — determines whether the adapter matches a high-resolution audio setup or a simpler stereo arrangement.

How it compares

Measured against everything we stock in Video Signal Converters, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 57% of the 1,459 comparable items (median $17.99).

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Specifications

Product
Product typeAudio Signal Converters
Ports & slots
First connector1 x HDMI ARC input
Second connector1 x Optical, Coaxial, 3.5 mm jack output
In the box
In the box1 x Audio Adapter
1 x Type-c power cable
1 x Users Manual

Questions about this item

Which output should I choose — optical, coaxial or 3.5 mm jack?

Optical and coaxial carry the same digital stream up to 192 kHz 24-bit; the 3.5 mm jack is analog stereo only and limited to PCM/LPCM.

What does the 192 kHz figure mean for my TV and soundbar?

The extractor accepts sampling rates of 32, 44.1, 48, 96 and 192 kHz at 24-bit depth, so high-resolution TV audio passes through unchanged.

Does the HDMI ARC connection limit the audio formats I can get out?

ARC transports up to 5.1-channel PCM/LPCM; the box outputs that same stream simultaneously on optical, coaxial and 3.5 mm (stereo only on the jack).

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