I picked up an Uno Synth Pro, the smaller desktop version. I get a lot of digital sounding noise in the audio, and it's annoying as heck. I tried different USB power bricks, and using either port (computer USB or aux power USB) and it's the same no matter what I do. I don't want to resort to using a noise gate. Geez, my Stratocaster doesn't make this much noise.
I know I'm not the only one on the planet with this problem, but I can't find a fix for it in Google searches, other than run it on battery power. Ugh, really?
I started going down the rabbit hole of finding a low noise USB power brick, but nothing there either. Everything is pretty well grounded in my studio, although my power bricks don't have a ground pin. I don't want to get into ground loop isolators, but I will if it comes to that. I found ground isolators tend to suck out some of the tone, jumping through a transformer.