Raspberry Pi cluster spotted inside $6k audio processor

People often ask me whether Pi clusters are useful besides just tinkering. I've built my fair share, including my most recent 'Lamp Rack' Kubernetes-in-a-Lamp cluster.

Well... I have a definitive answer: the Orban Optimod 5000-series audio processors:

These rackmount units each include a 3-node Raspberry Pi cluster, and they cost between $6,000-15,000! I found this specimen at the Orban booth at NAB 2025, and they sell a lot of these to broadcasters around the world.

From what I understand, one Pi is used for remote control, web UI, firmware updates, and local display. Another is used for multi-stream audio processing (independent of the 'head' Pi, so it can keep going even if there's a problem on the display/remote access side), and a third Pi, which I believe is optional, used for watermarking audio streams for data like Luminate/SoundScan ratings data.

Can you set up a box like this another way? Certainly.

Can you do that with minimal power consumption, leaning on vendor support for custom hardened and recent Linux images via rpi-image-gen for 10+ years of support? It becomes harder with most other vendors' modules. Relying on the Pi CM4/CM5 certainly saves time implementing an entire SoC / custom SoM design.

This is one of the more public uses of more than one CM inside a media box—there were a large number of expensive devices on the show floor with Pis buried inside. It's one of the easiest ways to take a company's vast experience with audio/video/RF processing and ASICs/FPGAs... and slapping a well-supported Linux and remote control option onto decades-old architectures.