DigiTech TL-2 - Manual (Page 8)

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Freq knob (ring) - Controls the Midrange frequency that the Mid
knob boosts and cuts. Range is 200 Hz to 5.0 kHz.
Gain Knob - Controls the overall distortion gain. Turn the knob
clockwise to increase and counter-clockwise to decrease the
amount of distortion gain.
Voicing Switch - This switches between the Metal Distortion’s
two voicings. Tight provides a punchy articulated low-end response.
Loose creates a thick heavy low end for grinding rhythm playing.
Input - Connect your instrument or the output of another pedal
to this jack. This jack enables battery power to the pedal when con-
nected. To prolong battery life, disconnect the cable from the Input
jack when not in use. If the optional Harman PS200R power supply
is used, cables can remain connected.
Foot Switch Release Pins - These two pins are spring loaded 6.
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