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Black HDMI audio extractor box with ports and LED indicators

PROSTER

PROSTER HDMI Audio Extractor 4K@30Hz SPDIF L/R 5V Power

SKU CH-A69B-8P8RR

Extracts audio from an HDMI signal to SPDIF and stereo analogue outputs while passing 4K video at 30 Hz, with selectable pass-through, 2.0 or 5.1 channel modes

  • TypeHDMI Converters
  • ColorBlack
  • AudioYes
  • Dimensions84.5 x 61.8 x 21(mm)
  • Extract audio to SPDIF and analogue outputs
  • Pass 4K at 30 Hz through the HDMI loop
  • Select PASS, 2.0 CH or 5.1 CH audio modes
  • Red and green LEDs show power and link status
  • Compact 84.5 x 61.8 x 21 mm black enclosure

What this extractor does

The PROSTER HDMI audio extractor takes a single HDMI source and splits the signal into a pass-through HDMI output plus separate SPDIF and stereo analogue audio outputs. It supports input resolutions up to 3840x2160 at 30 Hz and 4096x2160 at 30 Hz, with HDMI 1.4b and HDCP 1.4 compliance. The unit is aimed at installers who need to feed a soundbar, AV receiver or powered speakers while keeping the video path intact.

Thermals noise and power draw

The converter draws a maximum working current of 500 mA from the included 5 V USB power supply, which accepts 100–240 V AC at 50/60 Hz. It operates between –15 °C and +55 °C at 5–90 % relative humidity without condensation. There are no moving parts, so the device runs silently and adds negligible heat to an equipment rack or behind a display.

Behaviour under sustained load

LED indicators show power status and a successful HDTV link, confirming continuous signal lock during long sessions. The three audio-mode options — PASS, 2.0 CH and 5.1 CH — remain selectable without interrupting the video stream. TMDS signal levels stay within 0.5–1.5 V p-p and DDC at 5 V p-p, supporting cable runs up to 7 m on the input and 8 m on the output with standard AWG26 HDMI cables.

Highlights

  • Extract audio to SPDIF and analogue outputs
  • Pass 4K at 30 Hz through the HDMI loop
  • Select PASS, 2.0 CH or 5.1 CH audio modes
  • Red and green LEDs show power and link status
  • Compact 84.5 x 61.8 x 21 mm black enclosure

Specifications

BrandPROSTER
ModelHDMI Converter
TypeHDMI Converters
ColorBlack
AudioYes
Dimensions84.5 x 61.8 x 21(mm)

Questions about this item

How do I connect the PROSTER HDMI audio extractor and which step is often missed?

Connect an HDMI source to the input, the display to the HDMI output, then attach speakers or a receiver to the SPDIF or L/R ports. The step often missed is selecting the correct audio mode — PASS, 2.0CH or 5.1CH — using the switch on the unit so the extractor outputs the format your audio device expects.

What maintenance or replacement will the extractor need over time?

The unit has no moving parts or user-serviceable components. The only item that may need replacement is the 5 V DC power adapter if it fails; the extractor itself draws a maximum of 500 mA and operates from -15 °C to +55 °C.

What is the first limitation I will hit during sustained 4K use?

The HDMI 1.4b interface caps the input at 3840×2160 or 4096×2160 at 30 Hz with a maximum bandwidth of 340 MHz (10.2 Gbps). Higher refresh rates or deeper colour depths beyond 36-bit are not supported, so that resolution ceiling appears first under continuous operation.

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