Hey crew!
I’m monitoring the L/R audio master of my Digitakt via USB into Ableton, but can’t hear the Syntakt metronome in this scenario. I suspect it’s not possible to monitor the metronome out to the USB output along with the rest of the Syntakt mix?
PS: If I use headphone I can hear the metronome is audible, it’s just not monitoring along with the rest of the audio on my Syntakt master L/R output over USB in ableton?
Correct.
WHYYY??? 
Mmmm I have some theories, but I didn’t design it!
If I want the metronome track, I usually record a couple minutes of it externally then just try to sync it up in the DAW. Might be able to come up with a workaround using an external interface and some creative internal routing / level setting, then send the headphone out to the interface (but you’d have to disable audio to the stereo track and rely on compiling the stems from overbridge).
Although if you don’t want the metronome dry, like you’re willing to accept a stereo track with the metronome imbedded, then you could always just do the same thing with an external interface and record it that way without losing the overbridge stereo track, then sync that with your others, but that sounds less useful to me.
(the overbridge stereo track is the only one impacted by track levels, all other stems are at a fixed level)
As far as I know, all elektron devices are this way though. Did you just want to have a metronome recording for reference (like adding additional components in a DAW track)? Or was there some other practical need for it?
For me it’s mostly with stuff like getting sample lengths correct when trimming before importing to the device so that they’ll loop properly, and of course your DAW metronome will never be in sync with your device metronome unless one is getting clock from the other. But for syntakt, obviously no sampling so you wouldn’t be using it in that way.