This Musou HDMI Audio Exractor can be used for those receivers or amplifiers that does not have HDMI inputs. Suitable for various HDMI source devices like Roku or Chromecast without dedicated audio output as well as Blu-ray DVD player, cable/satellite receiver, Amazon Fire TV,Apple TV, PS3/4, Xbox, PC/laptop, HD camera, HD DVR etc.Specifications- Iuput Port: 1xHDMI IN,1xDC 5V Port,3xEDID Audio(Pass/2CH/5.1CH)- Output Port:1xHDMI OUT,1xSPDIF(Optical),2xRCA L/R Audio- Dimensions(mm):84(D)x62(W)x20(H)- Wight (g):230- Support video color format: 24bit/deep color 30bit,36bit- HDMI resolution:24/50/60fs/1080P/1080i/720p/576p/576i/480p/480i- Max bandwidth:225MHz;Max baud rate:6.75GbpsAbout the Audio EDID switchPASS:It means HDMI in and HDMI out,no audio extactor.Supportsall formats including more advanced Dolby Digital Plus, PCM5.1CH and beyond.)2CH Mode: It means HDMI in to HDMI out and 2RCA out.It can extract digital 2CH PCM stereo audio signal from the HDMI input and convert it to 2CH analog stereo output through its RCA style L/R analog output. The RCA L/R output will not have sound if the incoming audio is multi-channel audio (>2CH). Set EDID switch to 2CH for RCA L/T stereo application.5.1CH:It means HDMI in to HDMI out and SPDIF out.The SPDIF optical audio output supports all audio formats upto 5.1CH Dolby Digital 5.1CH / AC3 & DTS 5.1CH audio. Butnot supportDolby Digital Plus and higher formats,such as HD audio (Dolby TrueHD, DTS-HD Master Audio, PCM5.1 and beyond).Note:For 5.1CH PCM or above, set audio EDID to pass, connect HDMI output to receiver directly.If no video, do: 1) power up the TV, 2) power up this extractor, 3) Power reset the HDMI source unit.Package Includes- Main unit (HDMI Audio Extractor)- 5V/1A DC POWER SUPPLY- USER'S ManualWarranty:1 Year limited