What would be best ac adapter jack to use?

[Tony]

Hi,

  Just wondering about the ac adapter jacks. I noticed in Radio Shack they have some marked size "N", or "M"., etc. What would be best, and what does the Boss adapter use?

Thanks again,
Tony

[jasonober]

Adaptaplug "M"          2.1mm x 5.5mm

[Samuel]

I haven't seen other people doing this, but I personally use 2.5x5.5 jacks for 9V pedals and 2.1x5.5 jacks for 18V pedals so that the 18V adapter doesn't fit into the 9Vs. Avoids setting off my smoke detectors...

[Lonestarjohnny]

Good Idea Sam !
I order from Mouser, they got a lot of different style's of jack's and feeder cord's with right angle plug's,
Johnny