Manual

Note: The 9V and 12V high-current outputs are not isolated from each other
(their negative terminals are common). It is preferred to use only one. If using
both, combined output should not exceed 300mA.
4) 18V output. Use for 18V pedals which operate from two 9V batteries or require
less than 100mA. Do not power 9V effects at 18V unless recommended by the
manufacturer.
DC Power Cables
The Pedal Power end of each supplied DC power cable has a black barrel
connector. The other end has either another identical barrel connector (center
negative), a 5.5x2.5mm red barrel (center positive) or a 3.5mm mini-plug (tip
positive). Use the standard right-angle black barrel connector cables with most
common 9V battery operated pedals. Occassionally, a right-angle connector will
not properly fit the power jack, so a cable with straight connector is also provided.
Before powering your pedal with a standard black barrel connector, you must
verify that the pedal requires “center negative” polarity to prevent damage. Some
common exceptions with their power jacks wired for “center positive” are the
Fulltone ‘69, SoulBender, and Octafuzz pedals and Moogerfoogers. Reverse
polarity cables are available from Voodoo Lab to properly power these pedals.
Boss Pedals
There are two types of Boss pedals which operate from a 9V battery. These are
identified by the type of power supply specified, either PSA or ACA. Almost all
Boss pedals specify the PSA type adapter and operate at 9V. Boss pedals which
specify the ACA type adapter require a higher voltage and should be powered by
the 12V output.
Boss Twin pedals, such as the DD-20 (which require more than 100mA), should
be powered from the 9V high-current output.