Wilson Effects OD/Pre-Amp – A Refined Take on a Classic Overdrive

Inspired by the legendary "Grey Spec" 250, the Wilson Effects OD/Pre-Amp refines and enhances one of the most iconic overdrive circuits ever made. By addressing its tonal shortcomings, this pedal offers smoother highs, fuller lows, and increased versatility, making it a standout choice for players seeking a dynamic and responsive overdrive.

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Key Circuit Enhancements

• Balanced Highs – A subtle high-frequency modification smooths out the harsh "box of bees" effect at higher gain settings.

• Fuller Low End – A low-frequency modification and switch retain warmth and depth, even at higher gain.

• Clipping Options – A three-way switch allows you to toggle between:

  • Stock Clipping for the original vintage feel.

  • LED Clipping for increased headroom and clarity.

  • No Diodes for maximum volume, punch, and low-end emphasis.

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Additional Features

• True Bypass – Maintains signal integrity when the pedal is off.

• Standard Power Requirements – Runs on a 9VDC 2.1mm center-negative power supply.

• Handmade in the USA – Built with high-quality components in Guilford, Indiana.

• One-Year Warranty – Covers parts and labor for complete peace of mind.

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With these enhancements, the Wilson Effects OD/Pre-Amp takes a classic overdrive to the next level, delivering warm, dynamic, and harmonically rich tones. Have questions? Reach out via the contact form on our website!