Introducing the Debra Audio AU400 4-channel wireless microphone system. 

This set operates on frequency set B, which includes frequencies 506MHz, 517.5MHz, 531MHz, and 546.5MHz. With its UHF technology and adherence to international standard frequencies, this system ensures compatibility and reliability wherever you go.

Say goodbye to interference issues commonly found with traditional wireless microphones. Our advanced design minimizes disruptions from harmonic signals emitted by digital equipment such as CD/DVD/VCD/LD players.

Experience uninterrupted performance with our sophisticated squelch circuit, which accurately analyses RF frequency channel strength to eliminate noise without compromising signal integrity. Whether you're in a bustling conference hall or a crowded karaoke night, count on crystal-clear sound every time.

Perfect for a variety of settings including churches, small DJ/KJ stages, weddings, family gatherings, conferences, classrooms, and intimate karaoke nights. Elevate your audio experience with the Debra Audio AU400 wireless microphone system today.