9 volt centre negative, 500ma power supply from Kinsman. These are the cheapest power supplys we can source, which we still feel are good quality.

It will work with all standard 9v FX pedals (Kinsman, Boss, Behringer etc) that have a current draw of 500ma or less.  The end socket is a 2.1mm DC socket and will also work with the one spot converters, although not with the one spot daisy chain, this adapter is best suited for one pedal only.