1st, guarantee your Bluetooth microphone and speaker are thoroughly charged. Turn on both of those devices and enable Bluetooth pairing mode. Once connected, test the audio quality by playing music through the speaker while singing into the microphone. Powered by a large 1000 watt amplifier, the Electro-Voice ZLX-12BT is https://www.bluetoothspeaker.top/dual-pairing-bluetooth-5-0-loud-stereo-sound-speaker-booming-bass-8h-playtime/