DigiTech HARDWIRE TL-2 Owner's Manual page 7

What Does This Do?
1. Level Knob - Controls the distortion output level. Turn the knob
clockwise to increase and counter-clockwise to decrease the output
level.
2. DC Adapter Jack - Connect the optional Harman power supply to
this jack. Use the proper supply for your area's mains line voltage.
3. High Knob (center) - Controls the level of high frequency (treble)
boost/cut in the distortion effect. Turn the knob clockwise to increase
and counter-clockwise to decrease treble level.
4. Low Knob (ring) - Controls the level of low frequency (bass) boost/
cut in the distortion effect. Turn the knob clockwise to increase and
counter-clockwise to decrease the bass level.
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