The Shure PA421B is a professional active antenna combiner built to streamline RF management for in‑ear monitoring systems. It merges the RF outputs of up to four compatible Shure PSM transmitters into a single antenna feed, cutting stage clutter and helping deliver cleaner, more stable transmission. Active circuitry maintains consistent output levels for robust performance in demanding live environments, while integrated DC power distribution lets you power multiple transmitters from one mains‑connected unit to simplify your rack and reduce external PSUs. Designed for touring, rental and fixed installations, the PA421B features rugged construction, BNC connectivity and tidy rack integration with front‑mount antenna options for optimal placement. The result is a neater, more controlled RF setup that’s easier to deploy, troubleshoot and scale as your show grows. Ideal for monitor engineers and installers looking to consolidate IEM transmitters, minimise interference and enhance overall system reliability.
Includes
- Shure PA421B Active Antenna Combiner for IEM Systems
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