just whats written on the Audinate website about DanteHC
High Channel Count, High Capacity, High Performance
Audinate’s tradition of creating innovative and cutting-edge solutions continues, with the introduction of Dante HC™, the industry’s highest-capacity networked audio solution for professional AV systems. Dante HC supports up to 512 x 512 redundant bi-directional uncompressed audio channels on a single Xilinx™ FPGA. Dante HC expands Audinate’s broad portfolio of audio networking platforms, which OEMs can build upon to create cost effective AV products.
The Dante HC reference design is ideal for AV equipment products requiring high channel capacity, such as audio matrix routers, large format consoles, public address and evacuation systems and large scale DSPs.
Dante HC is a comprehensive reference design product that includes all the tools and resources required to rapidly integrate Dante into the AV manufacturer’s products, allowing high capacity networked products or Dante interface blades to be built. Applications include real-time streaming for broadcast, commercial installation, live sound, public address, intercoms and transportation communications deployments.
and I did not say that it’s widely used these days
and the Soundcard is 128×128 channels already
https://www.audinate.com/products/manufacturer-products/dante-pcie-card
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