Power supply

Hi.
I want to power on my ur22 by a mobile adapter. Is it possible? Which are specifications for a adapter?
My target is use the ur22 without computer - the guitar + the ur22 + a mobile adapter (instead a computer’s power supply) + the phones.

Yes, see post here,
https://www.steinberg.net/forums/viewtopic.php?f=157&t=79396&p=487229#p487229