The AN-820A is an active antenna compatible for the Sony DWR-R02DN and MB-X6 rack receiver systems. The antenna enhances the performance of the wireless microphone, extending the operating range and immunity to 'drop outs'. It is a compact unit that can be mounted on a wall bracket or a microphone stand. Normally a pair of AN-820A will be configured in the system, for diversity reception.

The AN-820A is available in four versions, covering different frequency ranges
LL: 470 MHz to 542 MHz
L: 556 MHz to 662 MHz
M: 638 MHz to 758 MHz
H: 758 MHz to 862 MHz