HOW TO – Old battery simulator/power supply for guitar pedals

For most circumstances, an old battery exhibiting ‘voltage sag’ is a bad thing – but many fuzz pedal aficionados take interest in an aging 9-volt’s effect on a circuit’s tone and behavior. The very excellent Geofex guitar-DIY site shows you how to make a pedal board supply that allows the user to dial in that sweet spot. – A Super Pedalboard Power Supply