LD Systems ANNY® R B4.7 Receiver Module for ANNY®This ANNY Receiver Module allows retrofitting of an ANNY wireless microphone by installing it in a free receiver module slot of the ANNY loudspeaker. It receives with the frequency band B4. 7 the frequency range of 470 490 MHz. A volume control on the module allows you to set the volume level to suit your needs, while a mute level control effectively eliminates noise and interference caused by weak signals. Radio signals can be received up to 80