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Presys Blend Controls
Volume • For the cleanest signal, set the volume knob as high as possible,
without causing distortion or feedback.
Bass • Boost here to add depth and weight to the sound of the guitar.
Middle • Turn the middle knob all the way left for a smooth “scooped out”
tone at high volume levels. Raise the middle knob to the right of center to add
midrange “bite” to the sound.
Treble • Boost to cut through the mix. Cut to mellow and subdue the sound.
Notch • Tune the notch fi lter to remove low-end feedback. Raise the volume
until feedback occurs, then slowly turn the notch to the right until the feedback is
eliminated.
Phase • Use the phase switch to improve bass response at low volume and
suppress feedback at high volume.
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