Power conditioners and wall warts

Great topic. I, too, would like to hear opinions.
In reply, I think there are many who are replacing wall warts with Linear Power supplies, to great effect.
Bob

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).

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) 

Makes sense. But my turntable is powered by a wall wart. 

Chuck, you can use a linear power supply (LPS) and get rid of the wall-wart. A LPS uses a toroidal or R-Core transformer instead of the switched mode PS found in the cheap and noisy W-W. The result will be a significant improvement in sonics; better dynamics and detail, larger soundstage, lower noise floor.

You just need to know the voltage and amperes needed to run your TT.

Thanks. Any brand or model recommendations for an LPS to replace a typical wall wart?

chuckjonez

Any brand or model recommendations for an LPS ...

This unit is terrific.

What twoleftears says.  Certain power conditioners have isolated banks: e.g. Isotek.  Otherwise I agree with others that doing a separate power strip with all wall warts / smps in it - and have that into a different outlet - is best.  This helps - but doesn't solve the problem.  A bad / fault PS can still bleed the noise back to the main panel, then eventually to your gear.  

There's also Acopian.

Thanks for the comments and recommendations. 

SMPS warts on a conditioned power supply sounds kinda silly to me unless every outlet on the thing is independently conditioned and isolated. They don't just make noisy DC power, but they put noise on the supply line. What's more, if the SMPS is half-wave rectified, it'll put a DC bias on the supply line. 

@chuckjonez another thing to consider is that the power cable itself, running from the power adapter to the turntable, can pick up noise. Even with a linear power supply. You'll want to make sure to keep the power cable away from other cables, particularly if run parallel to other cables, if that is something you experience.

I'm very pleased with the performance of a Swagman Labs LPS. I have the upgraded model. 

http://www.swagmanlab.com/page289?product_category=271&brd=1

They don't just make noisy DC power, but they put noise on the supply line.

Agree. This is a problem with the SMPS in a wall-wart.

lowrider57, thanks for the link to Swagman. 

Sorry for not replying sooner, but it seems others have taken up the slack.
Here is another company:
https://uptoneaudio.com/products/ultracap-lps-1-2
Bob