4 channel mixer: the device caters to multiple device connectivity because it has 4 channels. it has 2 xlr microphone inputs, 2 pairs rca (l/r) inputs, 1 pair rca rec outputs, and 2 1/4” (l/r) outputs.
usb/bt function: compatible with usb/flash reader/mp3, allowing users to connect an external usb stick or flash drive to stream music into the mixer. bt function enables users to wirelessly stream music from smartphones to mix music. built-in controls to play/pause/switch between modes.
product feature: 4 channel mixer audio, with 2 handheld uhf wireless microphones, open the mixer panel (mic on), and the microphone will automatically connect. the receiving distance is about 180 feet. each mic has 15 groups of frequency selection, uhf wireless microphone frequency is cha 576.1-590.1mhz, chb 560.1-574.1mhz