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

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 various factors, particularly harmonics generated by CD/DVD/VCD/LD and other digital devices. Squelch circuits generally assess the intensity of the RF frequency channel instead of differentiating noise from the intended signal. In challenging environments, or when the microphone signal is weak or the microphone is blocked, employing conventional low-frequency wireless microphones may cause the squelch circuit to open abruptly, leading the receiver to output a powerful burst of noise. It is well-suited for churches, small DJ/KJ stages, birthday or wedding parties, family gatherings, conferences, classrooms, and small karaoke nights