Topic: Has anybody two rme800 on a MBP running ?

hi folks,
has anybody two rme800 on a MBP Successfull  running ?
MBP 2,16 ( first intel) with 10.4.9
need only the digital inputs ( Adat/s/pidif ) - maybe 4 Analog

like a Line Mixer to build SubBusses with TotalMix.

Thanks