Broadcast Audio Routing Without The Rack Drama
The Broadcast Devices GPM-300-1 is a compact general-purpose matrix audio switcher built to route program audio cleanly and reliably in broadcast and pro AV environments. It’s designed to let you switch and distribute sources where you need fast, predictable routing, whether that’s a radio plant, studio rack, remote facility, or a utility position that has to “just work” when something upstream changes.
Compact Crosspoint Switching For Studios And Control Rooms
As a crosspoint switcher, the GPM-300-1 is made for practical day-to-day signal management like selecting which source feeds a destination, changing feeds for processors or recorders, and handling utility routes without repatching. The goal is economical routing that still behaves like broadcast gear, stable switching, tidy integration, and repeatable results when operators or automation systems trigger changes.
Analog And AES3 Digital Routing Flexibility
This platform is commonly used in setups that need to handle analog audio and or AES3 digital audio, giving engineers a way to manage mixed infrastructures during upgrades or when digital and analog must coexist. If your facility is juggling multiple formats, the GPM-300 family approach helps you keep routing centralized instead of scattering format converters and manual switch boxes throughout the plant.
Silence Detection And Backup Switching For On Air Confidence
A major reason these switchers show up in broadcast racks is resilience. The unit is associated with silence sensing on outputs and the ability to revert to a backup source when audio disappears, which is exactly what you want for emergency source switching and unattended operation. It’s also useful for critical feeds where you’d rather auto-protect a destination than wait for a human to notice a dead source.
Remote Control With GPIO And Network Options
For automation and engineering workflows, the GPM-300-1 is designed to be controlled locally and remotely, commonly including GPIO for straightforward logic control and Ethernet-based control options for networked operation. That combination fits broadcast control systems, studio automation, remote site integration, and facilities that want routing access without touching the rack.
Scalable Utility Switching For Growing Facilities
Instead of being a one-off problem solver, the GPM-300-1 sits in a broader family concept meant for scalable audio plant management. That’s appealing when you want consistent routing behavior across multiple rooms, need to standardize how sources get selected, or plan for expansion where additional I O and destinations might be required later.


