Hi @jaketeagle! Great to hear about your new Z Flip3! 😎
We had a check at our end, and the Product folks have confirmed to us that the USB C to 3.5mm adapter that came with the Tab S5e doesn't contain a DAC ('Digital-to-analogue-converter') - hence why you're getting that "unsupported" message.
i am planning to buy Creative SFXI TRIO. and their official site gives a statement
"Samsung devices implementation of USB C is different from andrioid standards hence, mic might not function properly"
does this hold true for Flip 3 as well ?
Lots of funny things can happen. I have a usb c to minijack from Sinox paired with the original Samsung Note 3 headset w/ mic and audio adjust. When these are plugged in the audio increases every time i touch the outer screen?!! When I unfold the phone, no volume adjust on the inner screen, BUT when I touch the lower left side on the phone ( when fold open) between the two white strips ON the metal chassis the audio increases to max almost immediately. Have a sneaking suspicion its the mic on the headset that is causing some issue. Drives me nuts. Called Samsung support and of course they have never heard about such behavior. Will try some mini jack headphones without mic ( only stereo) later. Only other option is to try other brands of usb c adapters and headsets.