Supersonic UHF Dual Channel Selectable Frequencies Professional Wireless Microphone Description - Introducing the Supersonic SC-930UHF UHF Dual Channel Wireless Microphone Systems! Whether you're a professional performer, a karaoke superstar, or simply looking to add some pizzazz to your next family gathering, our transmitter and receiver combo is the perfect addition to your audio arsenal. With a slew of impressive features that will leave you sounding crystal clear and in complete control, thi