I hooked up a multimeter to the output, turned up the gain to 100% and attached a synth generator. I couldn’t get a reading above zero.
There’s a chance my cable might not be correct. It’s a TRS 1/4" to TS 1/8". I used the same cable on my desktop system with a MOTU interface which is capable of outputting CV, so technically I can make a plugin on there and perhaps future hardware revs of the duo could work.