Debra Audio Pro UHF 4 Channel Wireless Microphone System with Cordless Handheld Lavalier Headset Mics, Metal Receiver, Ideal for Karaoke Church Party(with 4 Handheld (B))

AU400 4 channel wireless microphone system.
(Two set frequency points: A- 501/ 511.5 /524/ 538.5 B- 506/ 517.5 /531/ 546.5 ) This product series utilizes UHF frequency and operates on the internationally standard common frequency for global application. Conventional wireless microphones are frequently subject to interference from numerous factors, particularly from the various harmonics emitted by CD/DVD/VCD/LD and other digital devices. Squelch circuits generally assess the intensity of the RF frequency channel instead of differentiating between noise and the intended signal. Employing conventional wireless microphones in complex settings, or when the microphone signal is weak or the microphone is obstructed, can cause the squelch circuit to open abruptly, leading the receiver to output a powerful burst of noise. It is suitable for churches, small DJ/KJ stages, birthday weddings or family gatherings, conferences, classrooms, and small karaoke events