Plug-top type power supply (wall wart)
Output: 9 volts 400mA unregulated - centre positive 2.1mm DC plug.
Input: 110 to 120 volts 60Hz with U.S. style 2 pin power plug .

Intended for use with:
Control Freaks (all models)
Spin Doctor
GPIM-16
LD-2
Pro-SOLO mkII (but not mk1)
Pro-DCB (recent units)