Vox Valvetronix ToneLab SE Owner's Manual page 76

4. You're using the ACOUSTIC pedal effect and getting nasty
high frequency distortion.
• Could the Drive setting be excessively high?
• Are you using a very high output humbucking pickup?
Either turn down the volume of your guitar, the Amp GAIN or Treble setting for
the pedal.
5. The sound connected to your guitar amp is distorted, or
sounds wrong.
• Could "OUT SEL" switch be set to "Ln" (LINE)?
• Could LEVEL be raised excessively?
→Make the correct settings as described in Basic Connections.
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