Power conditioners and wall warts

When I had more room, I used a Furman with separate filter sections. That kept any wall wart noise 2 filters away from audio devices, while everything was protected.

I don’t have that kind of room, so I use a smaller Furman and a separate conditioner or a linear supply.

I use a Raspberry Pi as my digital music streamer, and a separate linear supply for my DAC.

I rely on the DAC having galvanic isolation (ground loop) and noise and jitter rejection built into the USB receiver. Those have gotten much better lately, probably thanks to cheaper chips which do all of this for you.

If your particular conditioner has fully isolated banks of outlets, then surely this isn’t a problem (plugging one straight in, I mean).

I have any some success reducing noise when plugging a switching power supply into a power conditioner. Audible results most often with turntables. Power conditioners can also ensure the power going into the switching power supply remains clean and stable.

for serious music listening I unplug all wall warts in the house and unplug my video system (from Charles Hansen of Ayre)