Wall wart removal...why no products that can handle multiple devices?

I bought an HD Plex unit precisely because I wanted to have  the ability to power more than one device. The hard part is getting the proper cable terminations, as each wall wart has differing sizes- Which HD can provide, but measuring them is a bit of a pain.

Bob

I've used these. Linear PSU

I'm not sure if this is something that would work.

i found This after browsing around but I'm really not sure what I need. I can see an issue is that all of my barrels on the wall warts are not all the same size. 
 

however I'm sure they could be spliced. 

I believe you are looking for a Wyred4Sound PS-1.

There is a base unit which you can add up four additional outputs with different voltage ratings. Three regular 1 amp outputs, plus one high current 3 amp.

Keces P8 8A Ultra Low Noise Linear Power Supply has dual output plus a 5 volt usb.

If all your wall warts share the same voltage you might be able to rig together something out of a single Astron bench supply.  :-)

Pro-Ject Power Box MaiA DS2

Output voltage / current (socket diameter): 2 x 9V / 2A max (1,3mm) 3 x 18V / 1A max (2.5mm) 1 x 15V / DC-turntable (2.1mm)