Q: Can every TV work with the 4K 4x2 HDMI 2.0a Matrix Switch?
A: Basically, the answer is YES. But if your TV can not support 4K, please refer the EDID LEARNING section to learn EDID from your TV.
Q: What is EDID? Why do I need to learn EDID?
A: EDID contains the whole information of the display such as the resolution and audio setting which this display can support. Therefore, based on the EDID information, media player will pick up the most suitable resolution and audio setting to the display. In order to faithfully transmit the EDID information from display to the media player, learning EDID from display to this device is necessary.
Q: What should I do to learn EDID for the 4K 4x2 HDMI 2.0a Matrix Switch?
A: Due to the limitation of HDMI, the source device can only output one format of video and audio. In other words, the source device cannot output 720p and 1080p video at the same time, or output stereo and surround sound at the same time. Therefore, you may need to manually setup each HDMI input for desirable audio/video output format. The mechanism of EDID Learning is to pick up the HDMI display with the lowest capability among the ones you would use for this input source. For example, if user would like to play the Input-2 upon output-2, output-3 and output-4, and only output - 3 cannot support 1080p [support up to 720p only], please learn the EDID from the display connected to the output - 3 at the Input - 2 port. Of course, if output - 3 would get the HDMI signals from every HDMI input, please learn EDID information from output3 to all four HDMI inputs.
Q: My TV can support 1080p, but why there is no audio?
A: The factory default EDID of this device is 1080p & 2ch audio. However, there would be a problem after you change to use 1080p & 7.1ch if the TV cannot support 7.1ch audio. Please use the default EDID, 1080p & 2ch audio.
Q: When I set an audio amplifier (AV receiver) between TV and the matrix to extract 7.1ch audio, but why there is still no audio?
A: Basically, the default EDID of the chosen input can support 7.1ch audio, but the problem is that the EDID of the amplifier still cannot match the default setting. Therefore, the best method is to learn EDID from the amplifier directly. Please refer to EDID LEARNING section and follow the steps to learn the EDID. When learning EDID from the amplifier, user just needs to connect the matrix and amplifier. Please don't connect HDMI cable between amplifier and TV when the EDID learning is proceeding.
Q: When I play the same content upon multi-displays, why only the TV equipped with amplifier can have 7.1ch audio, and the others don't have 7.1ch audio even no stereo?
A: Due to the limitation of HDMI, the source only can choose one video and one audio format to play, which can be either 1080p and 7.1ch or 1080p and stereo audio. It means when the user sets the matrix at 1080p and 7.1ch, the source will only play the content under this format. Therefore, if the TV cannot decode 7.1ch audio, there is no audio.