Power Supply Upgrade for Bluesound Nano

Why? Are you saying Bluesound engineers don't know how to do the circuitry of their devices correctly?

It's an unnecessary thing to do unless you're having issues

 Let’s void the warranty. Save yourself from mediocrity and take that money and save it towards an InnuoOS product. 

I use the PD Creative board and an iFi power supply. Just using mine as a streamer and it is a nice upgrade. All of this of course lets you use a much lower noise power supply than the unit’s original one. 
And I still use the Bluesound as there is a streaming service that I like that is not incorporated into most other streamers. 

Lhy 15VA LPS 5V.  I own one and I could hear sonic improvement over ifi ipower 2 (for Schiit Dac).

I added a Sbooster to my "Tuba" Headphone Amp from Hagerman Audio Labs.

I thought it sounded incredible and when I spoke with the designer Jim Hagerman about any additional tweaks, he recommended the Sbooster power supply.

It was a definite enhancement, with more punch over the included wall wart.