I’ll be interested to hear your thoughts once you’ve made this change. Not sure how long you’ve had your U2 Mini but hopefully you’re familiar enough with the sound quality to know how much of an improvement is made with this upgrade.
I’m not an electrical engineer but my understanding is that the inherent noise in these devices is of very high frequency and that filtering is a very common solution. I’d be interested to know if the difference in power supplies will be audible or not.
If you don’t mind what Dac are you running your streamer through and are you using digital out (coax or AES) or USB? I have recently purchased a U2 Mini- should arrive this week. I bought this more or less as an experiment piece to determine if I’ll be interested in pursuing network streaming or if I just keep things as they are.