Stompboxes power supply is both a trivial issue and a relevant subject. There are some basic points behind banality that can help make a good choice — and avoid troubles — when organizing a pedalboard. This overview on the current situation will bring some classic issues, such as polarity of old pedals, consumption orders of magnitude according to types of stompboxes. The big issue remains choosing between traditional transformer power supplies and switching power supplies, that nowadays begin to impose their technology, but are not always appropriate to analog circuits…
A second article will expose points on which ensure personal choices … A third will be devoted to the system that equips my Guitar Poppa pedals, in order to power them silently through any types of DC power supply respecting the negative to ground standard.