The Shure PA421B-E is a professional 4-to-1 RF antenna combiner for Shure PSM in-ear monitoring transmitters (excluding PSM200). By routing up to four transmitters into a single, optimally placed antenna, it reduces aerial clutter, minimises intermodulation, and helps prevent dropouts for a cleaner, more stable RF environment on demanding stages. High-isolation filtering and robust BNC connectivity ensure reliable performance in touring racks and fixed installations alike.
Engineered for live sound, theatre, broadcast and corporate events, the PA421B-E also provides integrated DC power distribution to compatible PSM transmitters, streamlining cabling and setup while centralising system control. The “-E” variant delivers EU-compliant power for consistent deployment across European inventories. Compact and road-ready, it’s a smart way to increase IEM channel counts and tighten RF management without expanding your aerial footprint.
Ideal for rental houses, production teams and venues seeking predictable, scalable monitoring performance in busy RF environments.
Includes
- Shure PA421B-E Antenna Combiner for PSM IEM Systems
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