If you are a talking about a balanced mic, then you will need a balanced mic preamp stage before the mixer, to provide needed gain and convert the signal to unbalanced.I am looking for a 9V mixer that has two inputs: 1) stereo (i.e. ipod) 2) mic or electric guitar. The output would simply be the combination of the 2 inputs but in stereo.
If anyone has a schematic, it would be greatly appreciated.
Thanks,
Mech3d