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Simplecom CM425 HDMI 2.0 Audio Extractor Optical SPDIF and 3.5mm Stereo with ARC 4K@60Hz

Regular price $48.95 AUD
Regular price $64.95 AUD Sale price $48.95 AUD
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Simplecom CM425 HDMI 2.0 Audio Extractor Optical SPDIF + 3.5mm Stereo with ARC 4K@60Hz

CM425 is an upgraded HDMI 2.0 Audio Extractor, supports video resolution up to 4K@60Hz and audio output through Optical SPDIF or 3.5mm stereo. It also supports ARC (Audio Return Channel), so you can connect it to an ARC compatible TV directly. It’s the ideal solution when you would like to output the audio through an external speaker system with analog or optical input, also when an older audio system without HDMI input.

CM425 enables extracting of embedded audio from HDMI source or extracting of audio from an ARC compatible TV directly, and output audio separately on either an analog stereo audio connector or a digital optical SPDIF connector.

CM425 meets the HDMI 2.0b standards with 18Gbps bandwidth support, which is ideal for home theatre, 4K gaming and video streaming on a 4K TV. This little adapter can be placed behind your AV hardware and powered by USB, which can take power from USB wall charger or an available USB socket on your TV, Media Player or PC.


  • HDMI 2.0b and HDCP 2.2 compliant with 18Gbps bandwidth support
  • Support HDR and video resolution up to 4K@60Hz
  • Convert 1 HDMI input to 1 HDMI + (SPDIF + 3.5mm or R/L) audio output
  • Support ARC (Audio Return Channel) for ARC compatible TV
  • Powered by USB, Micro USB port for power input
  • Three Audio Mode: Pass-through, 2CH and 5.1CH
  • Supports compressed audio DTS Digital, Dolby Digital and uncompressed audio PCM, LPCM


  • HDMI Version: HDMI 2.0b (backwards compatible)
  • HDMI resolution support:  480i/480p/576i/576p/720p/1080i/1080p/4K@60Hz
  • Input: 1x HDMI Input
  • Audio Outputs: 1x SPDIF (Optical),  1 x 3.5mm Stereo Audio (Analog)
  • Video Output: 1x HDMI output (HDMI pass-through)
  • ARC Support: Yes (with switch)
  • HDMI 3D Support: Yes
  • HDCP Version: HDCP 2.2
  • Max Bandwidth: 600MHz
  • Max Baud Rate: 18Gbps
  • Support Color Format: 24bit, 30bit, 36bit deep color
  • Digital audio Support: Dolby Digital, Dolby TrueHD, DTS-HD, DTS, PCM, LPCM
  • Max Input Cable Distance: 10m AWG26 HDMI standard cable
  • Max Input Cable Distance: 10m AWG26 HDMI standard cable
  • Power Input: 5V/1A
  • Dimension: mm (LxWxH)

Package Contents

  • 1x HDMI Audio Extractor
  • 1x 0.5M HDMI Lead
  • 1x USB Power cable
  • 1x 3.5mm to 2RCA(R/L) Adapter
  • 1x User Manual