I have the Bluesound Node 2i. I put a new power supply in it for $130. I have richer fuller bass and an open airier sound. This board also has reliability improvements. Also added an aftermarket power cord. Anything you can do to lower the noise floor is desirable.
The power supply is made by Pd Creative. Teddy Pardo makes them as well but the part costs as much as the Bluesound.