Advice needed for an USB DAC

[Nutul]

Also, do I still need a quality power supply for my pi 4B if I only use it with an USB DAC ? Until now I had an Allo Shanti to power my Allo Boss 2 DAC.

A quality PS is always welcome when it comes to music equipment.

The USB on the Pi4 is separated from the LAN, so it is prone to less induced noise, but the poor default switching PS may still bring some into play.

You may not need a very powerful one, now that you have an external, powered DAC, but still, I'd buy an low-noise PS; even better if it is a linear, quality one.