Check the listing for details. Audix H60 OM2 Wireless Microphone. Condition: Used. Listed at 76.00 USD. Working there is a scratch on some. I can also tune into an exact rf frequency for u if you decided just to buy the handheld because it’s not possible to pick a frequency without its receiver. This microphone has a 3 switch position on top of the body in between the head and its neck on the inside. You can adjust the gain levels with a toothpick or small flat screw driver