A: Yes — check out these:
Some of the Voodoo Lab Pedal Power series such as the Pedal Power ISO-5 have a dedicated 18-volt output. Some other Pedal Powers can be used with the Pedal Power 18-volt Y Cable to get the needed voltage from two 9-volt outputs. (Make sure the power supply you use supports this before using it!)
DISCLAIMER: As we mentioned in the original Tech Tip, please verify that your pedal is compatible with 18-volt power before connecting an 18-volt power supply! We are NOT responsible if you blow up your pedal with an incompatible power supply!