Add a microphone to your Midland GMRS radio The accessory earbud speaker microphones are flexible, comfortable over the ear microphones that are compatible with your GMRS radio. The two pack of microphones feature VOX PTT dual pin jacks for maximum strength. Add the AVP1 to your radio and communicate hands free with the earbud speaker microphonesMDLAVP1. AVP1. Midland Midland 2 EARBUD SPKR MICS.