The new DA-2277 combines the latest in vocal mixer controls such as Digital Key Control, Vocal Cancel/Partner modes and Digital Echo, and combines them with a Dual Wireless Microphone System with a built-in rechargeable base! With 4 A/V Channels and 4 Microphone Channels, the DA-2277 can be configured to several system types and applications. The microphones house Dynamic Microphone Capsules for professional sounding vocals and utilize a new low-power consumption design that allows them to transmit up to 12 hours per one full charge! Get the performance you deserve with the DA-2277 by VocoPro!