The AN-820A is a compact and inconspicuous active dipole antenna featuring a built-in 10dB power amplifier that compensates for signal loss over long cable runs. The antenna is available in different versions to cover specific UHF frequency ranges, such as 470–542 MHz and 638–758 MHz. It is designed for easy and discreet installation in various venues, including theaters and meeting rooms, with included mounting accessories for walls and microphone stands. An LED indicator provides a clear status of the antenna's power.

The antenna is compatible with a range of Sony wireless rack receiver systems, including the DWR-R02DN, MB-X6, and MB-806A. It is powered via a coaxial cable from a compatible receiver or power supply unit. Its user-friendly design makes it a versatile solution for both fixed installations and mobile setups.