Does anyone know if the GoPro usb/mic adapter cable has any voltage on it for powering electret mics ?
Also, does it work on other equipment with micro usb in ?

Ron C.

It is unpowered.
You can do a web search and find the pinouts to make your own cable.
Many people make one with power in plus mic in.

Does anyone know if the GoPro usb/mic adapter cable has any voltage on it for powering electret mics ?
Also, does it work on other equipment with micro usb in ?

Ron C.

Not sure about the second part of the question.

First part, yes, the USB/Mic/AV adapter cable delivers plugin power to a stereo electret mic. Still sounds like garbage however, with burbling self-noise constantly audible, at least on my HD3 and my previous HD2.

Fran