- Plug-in card for Avid MTRX base unit, article no. 422725, not included in the delivery - Occupies one module slot in the base unit - Adds two primary mini DigiLink ports to an MTRX interface to use with the HDX3 systems or as a hub for multiple Pro Tools systems - Provides 64 DigiLink I/O channels - Up to six boards can be installed in one MTRX base unit EUR 2399.00 - See more - Buy online