Hi Eman - that's a great idea. I remember turning the LEDs off when I got the device. Since I'm stealthing, and can't take the recorder out with all the cables connected to it (I also use the remote), I can't really know what's going as far as levels go. This could help me a lot.
It was the remote's cable and the other 1 or sometimes two cables running from the device, that made me not take out the device for checking for levels. It wasn't the case when I last taped a concert, but that was about two years ago, and since then I taped hundreds of lectures
with the remote, so the whole issue of levels wasn't on my mind at all and I forgot that with time of using the device daily. BTW, an awesome device (M10) - and mics (CAFS) - made hundreds of lecture recordings with not a single fail !
Good idea again, thank you !