Optimizes RF management and reduces rack clutter for up to four PSM®900 transmitters or two PSM®1000 transmitters when racked in a central location.

Shure PA421B Antenna Combiners are complementary accessories for Shure PSM Personal Stereo Monitor systems. When multiple systems are required for monitoring environments, the PA421B combiners quietly and efficiently reduce rack clutter and optimize RF management for up to four PSM®900 transmitters or two PSM®1000 transmitters when racked in a central location.