TC Electronic DARK MATTER DISTORTION User Manual page 6

Connecting
Input jack – 1/4 inch mono jack input.
If you run the pedal on battery, we recommend removing the
input jack to preserve battery power when you don't play.
Output jack – 1/4 inch mono jack output for connecting to
another pedal or directly into an amp or mixer.
Power in – Use a 9 VDC power supply with the following
symbol:
6