Some good reviews for the Pulse Mini.
Check some forums to see if a particular voltage input is beneficial i.e. does the Pulse Mini have a voltage sweet spot?
A decent DC cable as well. I have some from Ghent Audio which are good and reasonably priced.
If you can afford it, I would buy an LPS that has good reviews.
I love my Plixir Elite and TeddyPardo (and Coherent Systems UK) power supplies.
Like my Teradak DC30 and FiiO LPS.
Okay with the two generic dual supplies from AliExpress.
Read somewhere a guy who liked his PD Creative on a BlueSound.
As you know, a good power supply will lift performance, and should be an investment with no regrets.