Do It Yourself Musician #3 – Use a multimeter to check pedal board voltages

Quick Tip: Don’t just plug your new pedals straight into any old power supply connector! You might fry it! In this tip I show you some very basic multimeter usage to make sure you have the correct voltages set on your pedal board power supply.

More on how to use a DMM from mjlorton:

Tips on buying a good DMM from Dave Jones of the EEVBlog: