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Compact aluminium box with HDMI, optical, coaxial and 3.5 mm ports

YINGHUA

YINGHUA DAC Audio Converter ARC Extractor HDMI Optical Coaxial 3.5mm Analog (B)

SKU CH-MSEK-70CST

Extracts TV audio via ARC to optical, coaxial, 3.5 mm and RCA outputs while converting digital coaxial or optical signals to analog stereo

  • TypeHDMI
  • Converts TV sound to optical, coaxial and 3.5 mm via ARC
  • Extracts digital audio from fiber or coaxial to analog stereo outputs
  • Adjusts volume with TV remote when CEC is enabled
  • Aluminium alloy housing operates from -10 °C to 55 °C
  • Powered by Micro USB drawing up to 100 mA

DAC Audio Converter with ARC Extraction

This converter extracts audio from a TV through its HDMI-compatible ARC interface and delivers the signal simultaneously to optical, coaxial, RCA stereo and 3.5 mm headphone outputs. It also accepts digital optical or coaxial sources and converts them to analog stereo for amplifiers or powered speakers. Remote volume control is supported when the TV CEC function is enabled. The unit suits home-theatre owners who want to route TV sound to external audio gear without a dedicated AV receiver.

Output capacity and headroom

The device handles standard stereo PCM streams from ARC, optical or coaxial inputs and drives both line-level RCA and 3.5 mm headphone loads at the same time. Maximum operating current is 100 mA from a Micro USB supply, so a typical USB port or 5 V charger provides adequate headroom. It does not decode multi-channel formats such as Dolby Digital Plus or DTS, so surround soundtracks must be down-mixed to stereo at the source. Buyers who need bitstream pass-through or multi-channel analog outputs should look elsewhere.

Build quality and daily connectivity

An aluminium alloy chassis dissipates heat while keeping the converter compact for desk or behind-TV placement. Micro USB power means the adapter can share a TV USB port or a nearby charger, reducing cable clutter. Optical, coaxial, RCA and 3.5 mm jacks are all rear-facing, so connections stay tidy once routed. Operating temperature range spans -10 to 55 °C with storage down to -20 °C and up to 60 °C at 90 % RH, ensuring reliability in warm equipment cabinets.

Highlights

  • Converts TV sound to optical, coaxial and 3.5 mm via ARC
  • Extracts digital audio from fiber or coaxial to analog stereo outputs
  • Adjusts volume with TV remote when CEC is enabled
  • Aluminium alloy housing operates from -10 °C to 55 °C
  • Powered by Micro USB drawing up to 100 mA

Specifications

TypeHDMI

Questions about this item

Will this converter work with my older amplifier that only has RCA inputs?

Yes, the converter provides analogue stereo RCA output alongside the 3.5 mm jack, so you can connect it directly to legacy amplifiers or powered speakers.

How can I confirm the ARC extraction is active after connecting everything?

Enable CEC on the TV, then use the TV remote to adjust volume; if the RCA or 3.5 mm output level changes, the ARC path is working.

Does the package include the Micro USB power cable and an HDMI cable?

The unit requires a Micro USB power source (5 V, up to 100 mA); an HDMI cable and USB power adapter are not included and must be supplied separately.

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