I was looking for a setup for doing what I call "wireless busking (in order to avoid carrying also a mic and a stand)" and after the usual great advice from Thomann, I got this earmic, together with "the t.bone TWS 16 PT 863 MHz" wireless system. I connected the wireless system to a 12V, 7A battery and... Voilà! I connect these to a Roland AC-33 amp, together with my acoustic guitar and once you adjust the proper volumes and gains, for small roads, or square is fantastic! Some people don't believe that you are playing live, because the setup is quite unique, but when they get close, they realize that it's a great (I think) idea! I also use this earmic for recording and with the proper EQ and compression, it delivers! You have just to be careful with the cord, which is very thin, but handled in the proper way, it works beautifully!