Power conditioners and wall warts

Bob, what’s a linear power supply in this context? A plug and play replacement for a wall wart?

I like to put wall warts outside of the audio power conditioners. 

I would use an extension, like a power strip from the conditioner, for the wall warts. (and I DO!) I use an old Adcom conditioner just for the WiFi and a powerstrip for my phone charger, the Laptop charger, a nearby lamp. I used to also have the wall wart for my Rega P5 turntable in it too. but recently moved that wart to a Furutech GTX duplex.      
Make an extension.. get a dual duplex box at Menards etc, stick in two duplex, wire it up. Plug it into the conditioner.

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).