What about using 3 Mytek DACs for multichannel?

I have been running 3 Mytek Brooklyns via a USB hub which MacOS can aggregate into a “virtual” 6 channel DAC. JRMC sees each individual DAC as well as the aggregate device which permits 5.1 playback. Roon sees only the three individual DACs.

Update: It does “see” the Aggregate Device" of the three DACs but it will not permit choosing anything but 2.0. Still, it does not play anything but displays “Transport: Device In Use.”

If I choose any of the three individual DACs, the stereo output goes to (1) front L/R, (2) center/sub or (3) rear L/R speakers, depending on the choice…

How can I get all three at the same time?

+1

having the same issue:

Any news yet?