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Black metal box with HDMI, optical, coaxial, USB ports and 5.1 RCA outputs, plus remote

WRIARICH

WRIARICH UD851B audio video converter HDMI ARC 5.1ch 4K 24bit 192kHz

SKU CH-M7J7-8W757 MPN UD851B

Extracts audio from HDMI ARC and multiple digital sources to 5.1 analogue output with 4K 30 Hz pass-through and 24-bit 192 kHz decoding

  • Adapter typeAudio Converter Decoder
  • First connectorHDMI / COXIAL / OPTICAL / PC-USB / U disk-USB / BT-5.0
  • Second connector5.1CH
  • Units per package1
  • Design styleHDMI ARC Audio Extractor
  • Product colorBlack
  • Extracts 5.1 audio from HDMI ARC, optical, coaxial and PC-USB inputs
  • 4K 30 Hz video pass-through with HDMI 2.0 b and HDCP 2.3
  • Decodes DTS, AC3, FLAC, APE and more to 5.1 analogue RCA
  • IR remote and front button select any source instantly
  • 24-bit 192 kHz DAC with 90 dB SNR and 0.03 % distortion

HDMI ARC audio extractor with 5.1 channel output

The WRIARICH UD851B accepts one HDMI input plus coaxial, optical, PC-USB and U-disk USB sources. It decodes all incoming signals to 5.1 channel analogue audio through RCA connectors. An infrared remote and front-panel button let you switch sources instantly.

Home cinema builders needing multi-format decoding

This unit suits users who want to extract audio from HDMI ARC and legacy digital inputs into a surround amplifier. It also handles USB media playback with FLAC, APE and WAV support. Buyers requiring HDMI 2.1 bandwidth or eARC should look elsewhere.

4K 30 Hz video pass-through

The HDMI path supports resolutions up to 4K×2K at 30 Hz and 3D formats. Audio processing runs at 24-bit 192 kHz with a 90 dB signal-to-noise ratio and 0.03 % distortion. This specification determines compatibility with your display and amplifier chain.

How it compares

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

Price $77.99
Pricier than about 90% of the 1,459 comparable items (median $17.99).

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Specifications

Product
Adapter typeAudio Converter Decoder
Design styleHDMI ARC Audio Extractor
Product colorBlack
Audio & video
SoundYes
Ports & slots
First connectorHDMI / COXIAL / OPTICAL / PC-USB / U disk-USB / BT-5.0
Second connector5.1CH
In the box
Units per package1
In the box1 : Decoder machine x1 2 : Infrared remote controller x1
3 : DC-12 V/1A power adapter x1 4 : Digital optical fiber cable x1
5 : Bluetooth Antenna x1 6 : User manual x1

Questions about this item

What connections does the UD851B need for power and audio outputs?

The unit requires the included DC 12V 1A adapter plugged into AC 100-240V mains. It provides simultaneous HDMI ARC, optical, coaxial and 5.1-channel RCA analogue outputs.

Which step do users often miss when setting up the IR remote with the UD851B?

The remote needs two AAA batteries which are not supplied. Insert them before pairing, then use the remote or front button to select the active input source.

What ongoing maintenance does the UD851B require?

Replace the remote's AAA batteries when range drops below 15 metres. Firmware can be upgraded via the manufacturer when updates are released.

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