Pigtronix OFO-Disnortion - Manual (Page 6)

Getting Started
Basic Hook Up
1. Unpack your OFO and place it on a flat, stable surface.
2. Make sure you are using the 15-Volt DC (negative center) power supply
that came with your Pigtronix OFO. The OFO will work with 9 OR 12
Volts DC (negative center) but this is not recommended.
Plug the power cord into the 9-15VDC jack on the back of the OFO and
then plug the power adaptor into an electrical socket.
The OFO is now powered up. To turn the device off, unplug it from the
wall or turn off the power going to the socket that the power supply is
plugged into.
Because of the complex switching that is necessary to make the OFO do
all that it does, true bypass was not possible in this design. The OFO
must be powered up for audio to pass through the pedal. When the unit
is bypassed, there is no degradation of the audio signal.
We recommend that you do not leave your OFO powered up for long
periods of time when it is not in use.
3. Plug your instrument into the “IN” jack and plug your Amplifier into the
“OUT” jack as shown above.