The PMU USB 1.1 system allows you to connect a wireless microphone directly to a computer. The product consists of a USB receiver and a Body Pack transmitter and, to ensure maximum flexibility of use, is supplied with two microphones (to be used alternatively), one headband and the other Lavalier type. The receiver is equipped with an additional 3.5 Jack connection which allows an audio connection. If the receiver is connected to a PC, this output allows you to use a mixer or amplified speaker at the same time (check that the input sensitivityof the speaker is adequate for good reproduction) If the receiver is powered via a USB socket (USB player / Power bank, power supply only) via the 3.5 Jack connection, connected to a mixer, it behaves like a normal wireless microphone