This is a very rare Boss effect pedal. These are very hard to find. It offers vintage guitar synthesizer and wave effects. See pictures for other details. This pedal requires a guitar with GK-13 Pin pickups.

The Boss WP-20G Wave Processor is a digital effect pedal designed for electric guitars. As a rare collectible item, this pedal offers advanced wave processing capabilities for creating unique and dynamic guitar tones. With its reliable Boss brand and specific model, musicians can trust in the quality and performance of this pedal to enhance their sound during live performances or studio recordings.

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