This Amp works great with my Mac computer, but not with my iPhone. I bought the camera adapter as suggested by others in the reviews for the iPhone and it didn’t work as I got an error of insufficient power. I read more threads and found out the DAC requires some power from the iPhone and an iPhone doesn’t have enough. So then as suggested in other reviews I bought the powered camera adapter, which was the supposed fix. Nope, that didn’t work either. So a solid amp for my computer but not recommended for iPhone use.
GMan1Return that adapter and get a Chromecast Audio (they’re still out there) and hook it to the optical input. I’ve been using this setup for a couple of years. It’s great.