Loading the product…
Loading the product…
865 MHz - 470 MHz to 865 MHz
MSRP$2,500.00
$2,183.61
Save 13%Special order — estimated available by September 10, 2026.
Genuine Shure through authorized distribution — TAA country-of-origin verified and NDAA §889 screened before checkout.
Shure PA421B Antenna Combiners are complementary accessories for Shure PSM® Personal Stereo Monitor systems. When multiple systems are required for monitoring applications, the PA421B combiners quietly and efficiently optimize RF management for up to four PSM® transmitter, while also reducing rack clutter. (Directly replaces PA421A.)
Features
• Combines up to four PSM® transmitters to a single antenna set
• Improved intermodulation artifacts for cleaner RF environment
• Reduces rack clutter
• Wideband operation (470-865 MHz or 865-960 MHz)
• Daisy-chain up to 2 combiners with the expansion port
• LED indications of signal presence, signal overload
• Improved fan design significantly improves thermal efficiency and ambient noise
• Optional modification to enable combining of microphone receiver antennas (contact Shure Service Department for more details)
• Provides +15V bias on RF inputs to power antennas
• Requires modification of unit by qualified service technician
About us Good sound is fine for some people. But at Shure, we’re only interested in delivering sound experiences that immerse and inspire you. When history’s in the making - from Elvis to Martin Luther King Jr., from the GRAMMYs® to the Olympics - iconic performers, leaders and communicators trust Shure to deliver their messages clearly, for all to hear. For almost 100 years... We’ve engineered our passion into audio innovations that deliver flawless sound. Consistently. Globally. You can trust us We get it. It’s a high stakes moment. We’re a company of engineers. But we’re also performers, artists, presenters, concertgoers, and sometimes yeah, fans. We know the excitement before going on stage, starting a critical conference call, or listening to your favorite music. We understand what you’re going through, and what you need. We got you. Partners, products, passion. We’re right there by your side in every moment that matters - large and small. Our products are designed to outlast and outperform the competition. They’re not created to just be ok. They’re built to be the very best. You got this. Time to be extraordinary. What’s the point of all this engineering and innovation if it doesn’t inspire or empower you? If it doesn’t move you, why should you care? With whatever stage you’re about to step onto—be it conference room or concert hall—we empower you with the proven audio engineering you need to experience and make extraordinary happen. Our Core Values As a Company and as individuals, we are ethical, honest, and fair in dealing with Associates, customers, and suppliers. We manufacture products of unmatched quality, reliability, and durability. Shure Associates show respect for one another in all circumstances. Shure is a good corporate citizen, neighbor, and employer. Solutions designed for you Whether you’re a musician, audio engineer, podcaster, lecturer, broadcaster, IT manager, sound contractor, YouTuber, or simply a music lover, Shure has an innovative audio product to exceed your expectations. From microphones to headphones to conferencing gear, we make products that help you define your sound. We take equipment issues out of the audio equation, so you can concentrate on your message or performance with confidence. Performance & Production Conferencing & Meetings Headphones & Earphones
| General Information | |
|---|---|
| Manufacturer | Shure, Inc |
| Manufacturer Part Number | PA421B |
| Brand Name | Shure |
| Product Model | PA421B |
| Product Name | PA421B Four-channel Antenna Combiner, 470-865 MHz |
| Product Type | RF Combiner |
| Interfaces/Ports | |
| BNC In | Yes |
| BNC Out | Yes |
| Number of BNC Inputs | 4 |
| Number of BNC Outputs | 2 |
| Power Description | |
| Input Voltage | 120 V AC, 230 V AC |
| Technical Information | |
| Minimum Frequency | 470 MHz |
| Maximum Frequency | 865 MHz |
| Miscellaneous | |
| Package Contents |
|
| Country of Origin | Mexico |
| Environmentally Friendly | Yes |
| Environmental Compliance | Waste Electrical and Electronic Equipment Directive (WEEE) |
$21.18
$2,183.61
Back-ordered$4,578.82
Back-orderedSend a bill of materials or part numbers — we confirm stock, TAA country of origin and a below-market total. No payment up front.
