The Pyle PWMBP1 is what you need to make any sound device wireless. Simply plug a microphone, CD player, MP3 player, etc. into the 3.5 mm jack and turn on. It works great without wireless receivers, like the PWMA830, PWMA850 and the new PWMA100. It also works with the Peavey 18019490 Pro Comm system, the Fender Passport Wireless System and any wireless receiver that runs on 174.8 MHz. It requires one 9 V battery.