Does this adapter support microphone-input from a headset?

In other words, does it contain a DAC for both the stereo-output AND mono mic input? And have TRRS-pins for left/right/ground/mic.

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    It does work but I will say this; I have been noticing a lot of complaints from callers since using my iPhone 7. I blamed AT&T for the longest. I just did an experiment with the adapter and using the phone mic. Voice quality on the phone mic was perfect. Voice quality using a headphone with the adapter produced a very muted and muffled output. No wonder people were complaining they couldn't hear me. If I use the headphones on another phone without the adapter, the headphone mic is also fine.

    My conclusion is there is a serious mic degradation if you are going to use headphones / inline mic and the 3.5 adapter.

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  • Yes, it supports microphone, volume up/down, start-stop buttons.

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