Topic: Aggregate on mac: getting software playback into the 2nd device

I am trying to use my Babyface as an extra headphone output to use for the day with my RME UFX. I have set up an aggregate device but I am not getting any input signal into the Babyface which I set up as the second device in the aggregate.

My goal is to get a separate headphone sub mix in a return track and send that to the Babyface. I got this to work on the UFX but I need more length on the headphone chord and the extension wont be here till Saturday! So I thought of trying the Babyface as an extension chord.

I see no signal coming in to the Babyface an have tried pretty much everything. Master out in Live 10 only allows one stereo output.  Would appreciate any help!

Re: Aggregate on mac: getting software playback into the 2nd device

How does the 2nd device receive signal? thanks!~

Re: Aggregate on mac: getting software playback into the 2nd device

In system preferences Audio, what audio device is selected as output ?

M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue