This karaoke setup comes with the AV510 microphone controller and two battery-powered handheld microphones, each operating wirelessly on separate UHF frequencies to ensure clear vocal performance without any radio interference and even lets users move around while singing. You can use the controller to adjust the tone and volume of the microphones as well as customise the echo effect. Featuring optical and coaxial inputs, this karaoke system can be readily connected to your TV in order to sing along to songs whilst reading lyrics displayed on the screen, so that the singers and anyone else at the party can see what you’re singing.
eBay