PS:
I use the rack mount version of this inexpensive strip for the wall warts:
https://amzn.to/2UcvMuv
or
https://amzn.to/2EDIyga
They filter noise down to 3 kHz, and have great surge suppression. If you use them for the little noisy adapters they add one more filter between your main power conditioner and your analog gear and DAC.
I use the rack mount version of this inexpensive strip for the wall warts:
https://amzn.to/2UcvMuv
or
https://amzn.to/2EDIyga
They filter noise down to 3 kHz, and have great surge suppression. If you use them for the little noisy adapters they add one more filter between your main power conditioner and your analog gear and DAC.