It's not just about noise its also about the robustness of the power supply and a better power supply should always make an improvement. Regardless of the quality of the actual power you're supplying to it.
Is a power supply beneficial for component SQ if you have a quality power conditioner?
I have a shunyata MPC-12a power conditioner. Would it be beneficial or unnecessary to spend the money to, say, replace the wal wart on my streamer with a power supply to plug into the power conditioner? Thanks folks