Audio quality of Intel NUC

Thanks for your advise.

I will get the Allo Boss 1.2 with the Rapsbery Pi 4B with 4 Gb of RAM, the iFi Power 5v 2,5 A and the Case HiFiBerry / Allo Raspberry Pi 4 - black matt

That s all! right? Or do I need also the regular Rapsberry power suply too?. I mean, the iFi for the Allo only and the other one for the Rapsberry, keeping in mind that I have to disconnect the power connections between the Rapsberry and the Allo hat.