The Shure PA421B-E is a professional 4-to-1 RF antenna combiner designed for Shure PSM in-ear monitoring transmitters (not compatible with PSM200). It consolidates up to four transmitters into a single high-quality antenna output, reducing aerial clutter, minimising intermodulation, and improving RF stability across stages and venues. Integrated DC power distribution allows multiple PSM transmitters to be powered directly from the unit, simplifying rack builds and cutting down on separate mains cabling.
Built for reliability in touring and fixed installations, the PA421B-E offers robust construction, dependable RF filtering, and straightforward BNC connectivity for fast, repeatable deployment. The European “-E” variant ensures region-appropriate power compliance, making it an excellent choice for EU-based productions, rental houses, and integrators standardising on Shure PSM systems.
Use it to streamline IEM transmission, optimise antenna placement, and achieve cleaner, more consistent monitoring in live sound, broadcast, theatre, and corporate environments.
Includes
- Power supply (PSU)
- Power supply
STAGE1.1.100.999