I have had a wireless instrument setup once upon a time. Basically, here is the deal. I setup my sound equipment for parties where I work...and I have always just used a wired mic for speeches, etc. I was thinking of going wireless.....so my question...is there a wireless instrument module that I could plug a mic in to as well? Not at the same time....just so I could have a wireless for a mic when I am not playing music...and then use the same unit for when I am playing music? I would never need the mic and instrument wireless at the same time. Might be a dumb question....just thought I would ask. I saw something like this: http://www.musiciansfriend.com/pro-audio/akg-wms-40-mini2-vocal-instrument-wireless-microphone-set I was hoping I could buy just the wireless mic at first and then add on the instrument pack later....they do sell them separate, but the only way is to have 2 of the receivers I think?