All stock codes associated to this product
CM425, HXSICM425, HXSI-CM425, 9350414002208
Simplecom CM425 HDMI 2.0 Audio Extractor Optical SPDIF + 3.5mm Stereo 
with ARC 4K@60Hz
 
Overview
  - Convert 1 HDMI input to 1 HDMI + (SPDIF + 3.5mm or R/L) audio 
  output 
  
- Ideal solution for connecting external speaker system with analog or 
  optical input, or older audio system without HDMI input 
  
- Powered by USB (5V/500ma), Mini USB Power Cable and Wall Changer 
  included 
  
- Simultaneous audio output to both audio outputs (HDMI Audio 
  Splitter) 
  
- HDMI 1.4 Compliant and supports Ultra HD 4K x 2K Resolution 
  
- Supports compressed audio such as DTS Digital / Dolby Digital and 
  uncompressed LPCM audio
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. Its 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.
Features
  - 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
Specifications
  - 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