Shure PA821B Antenna Combiner

Clear the Clutter and Create a More Manageable System with the Shure PA821B Antenna Combiner

Shure PA821B Antenna Combiners are complementary accessories for Shure PSM Personal Stereo Monitor systems. When multiple systems are required for monitoring environments, the PA821B combiners quietly and efficiently reduce rack clutter and optimize RF management for up to eight PSM®900 transmitters or up to four PSM®1000 transmitters when racked in a central location.

Note: PA821B replaces PA821A.

• Combines multiple PSM transmitters to a single antenna set
• Improves RF networking
• Reduces rack clutter
• Wideband operation (470–865 MHz or 865–960 MHz)
• 8 Input LED Signals (green when active; off when inactive)
• Quieter fan for significant reductions in ambient unit noise
• Temperature-sensitive fan power for significant reductions in ambient unit heat
• LED indications of signal presence and signal overload
• Passive (non-powered) antenna combining*

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.