The Shure PA421SWB is a wideband PSM antenna combiner built to streamline and stabilise professional in‑ear monitoring. Covering 470–952 MHz, it merges up to four compatible Shure PSM transmitters into a single RF output so you can run one quality external antenna for cleaner, more consistent stage coverage. Centralising transmission helps reduce intermodulation and competing RF sources, supporting clearer audio and more reliable IEM performance in busy RF environments.
Engineered for touring reliability, the PA421SWB delivers robust RF performance with low insertion loss and high channel isolation. Standard BNC connections allow quick, dependable integration with Shure PSM systems and established RF workflows, while the rackmount form factor keeps rigs neat, serviceable and easy to scale. Whether you’re building a touring rack, a theatre install, a broadcast stage or a rental inventory, this combiner simplifies cabling, optimises antenna placement and enhances overall system stability.
Choose the PA421SWB when you need a tidy, dependable backbone for multi‑channel IEM transmission on stages of any size.
Includes
- Shure PA421SWB PSM Antenna Combiner 470–952 MHz
STAGE14.9.100.90