avedio links 8K HDMI Audio Extractor No box, manual, or batteries. Four audio EDID settings: TV/2.0/5.1/7.1 audio formats can be switched. TV/2.0/5.1/7.1 audio formats can be switched. TV Mode: The HDMI output signal is in TV Copy Mode, so the output resolution is based on the EDID displayed on the TV. The HDMI Audio Extractor also extracts audio, outputting 2.0ch audio signals through the 3.5mm port and SPDIF 5.1ch audio output through the SPDIF port. 2.0ch Mode: The HDMI Audio Extractor 4k HDR output signal is output through the 3.5mm port, and the audio format for the HDMI Audio Output and SPDIF port output is 2.0ch PCM format. 5.1ch Mode: HDMI 2.1 converter with 7.1 audio output signal is output through HDMI Audio Output and SPDIF port (Note: The 3.5mm audio port does not support 5.1ch. Please disconnect the 3.5mm port for 5.1ch audio format). 7.1ch Mode: The audio format in this mode is LPCM. The output signal of the avedio links HDMI Audio Extractor 7.1 is output through the HDMI Audio Output. (Note: If the TV or monitor does not support 7.1ch, no audio signal will be generated.)