Vocopro is proud to introduce a brand new way to bring reliable wireless microphones to the masses: a UHF/DSP hybrid system. A Hybrid system can take advantage of both digital signal processing and analog UHF transmission. Having a DSP chip to process the audio not only replaces hundreds of components to increase reliability but also reduces cost and background system noise. The vocal signal is then communicated by our proven UHF technology; making the UDH-Dual a revolution in both performance and value.  The UDH-Dual-B is built with an on/off switch, a mini-XLR jack for the mic input, and a volume control knob. In addition, a two color single LED indicates when power is on and flashes solid green for healthy batteries. It blinks red when the batteries are low and require changing.