Wireless transmitters and receivers free a microphone, instrument or bodypack from its cable. The listing covers handheld systems such as the Samson Stage XPD2, bodypack systems from Shure including the SLXD14 and the dual channel SLXD14D, guitar systems like the GLXD16 with its pedal receiver and the Blackstar Airwire i58, plus separate Audio-Technica components for extending a rig you already own. Decide which format you need, then read the frequency band quoted on the model.
