Used Shure PSM 300 Four Port Antenna Combiner PA411 Wireless System

Used Shure PSM 300 PA411 Four Port Antenna Combiner in great condition, offering reliable RF performance for wireless in-ear monitor systems. This unit combines up to four PSM transmitters to a single antenna, reducing intermodulation and conserving space. Features include a wide frequency range of 470–865 MHz, internal power supply, and passive combining circuitry. Ideal for professional stage environments seeking clean, efficient wireless audio performance with minimal dropouts.