StudioLive Ai mixers support linking of only like Ai mixers. Currently, we do not have support for older FireStudio (i.e. FireStudio Project/Tube/Mobile/etc.) and first generation StudioLive 16.4.2 and 24.4.2 mixers
For more specifics on how to cascade and the most up to date information on this feature, please go to the following link below: