PD-Creative


anyone tried the PD-Creative(Polish) linear power supply mod to the Bluesound Node 2i?
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O.K.  Here I am with a new (2021) Bluesound Node in the mix.  Never mind that it took almost two hours for it to play ball and be recognized by the Bluesound app.  It did and I’m happy as Hell.  So pardon me if I’m partying at the moment.  I live in one of those green states.  Anyway, I’ve obviously got the experience of the 2i and the 2i upgraded.  On to the new Node.  I was curious as to how the old 2i  stacked up.  Threw on my favorite Spotify play list (blues).  The Node was grating.  Less glare than the stock 2i but that’s where the fun ended.  It was very etched and unconvincing. And little body.   Somewhat easier to follow in the vocals but no inner detail at all.  The stock 2i kicks its rear musically.  So there you have it.  I’ve got the Creative upgrade on the way as we speak.  Whatever.  
OK, just to be clear (to me), does the PD Creative PS board improve the sound only if you are using the internal DAC? Or does the improvement also apply when using an external DAC? I have seen conflicting statements on this.