Fixed audio hiss in Olympus em1 ii (and iii) over hdmi and when connecting an audio recorder.

[John Matthews]

Go to video -> Sound -> audio setting -> PCM Recorder Link -> Camera REC volume. You need to have it set to "disabled". Now there's no more hiss, but you need to have your external recorder connected to the mic input as it is now the preamp and the camera does nothing (except record the audio it receives). Took me forever to figure this out. I thought someone might be interested.