Quad channel UHF wireless microphone system to enjoy cable-free operation.
Metal build receiver for durability and high quality plastics component build handheld mics for light-weight feature.
Individual volume control to precisely balance and adjust vocal sound. Green LED lights above each volume knob enable users visualize the pair up between receiver and transmitters.
The Red LED lights would show the power ON/OFF.
The Green LED lights would show the Audio signal.

System Performance:
Cardioid mic capsule enables easy sound pickup and smooth sound transmission, delivering state-of-art clear true sound performance.
Stable fixed UHF signal ensures unsurpassed interference-free distortion-free operation, operating distance is up to about 300ft line of sight in open space. It is more good that all VHF wireless microphone system.
Perfect for karaoke, meetings, public speaking, interview, group karaoke, broadcasting, church, and outdoor events

Simple and easy to use: Easy setup wireless microphone system and convenient operation with ON/OFF switch on cordless mic. The bodypack have the Knob control the ON/OFF and the volume.
Metal receiver have 4 independent XLR outputs and one 1/4? mixer audio output jack to connect to your amplifier, mixer, or other PA system.
Features:

Debra Audio AU400 4 channel wireless microphone system.(Two set freuqncy point: A- 501/511.5/524/538.5 B-506/517.5/531/546.5)

There series products adopt UHF frequency and use the international standard common frequency which can be used in all over the world.

Due to the low frequency and many reasons, traditional wireless microphone usually disturbed by many factors especially by the variety of harmonic which send off by the CD/DVD/VCD/LD and other any digital equipments.

Squelch circuit usually analysis the intensity of the RF frequency channel instead of the noise and the needed signal. Using the low traditional wireless microphone in the complex environment or when the signal of the microphone is week or the microphone is closured, the squelch circuit many suddenly opened which result the receiver send out a strong burst of noise.

It ideal for church, small DJ KJ stage, birthday wedding or family party, conference, classrooms, small karaoke night etc.