This Korg Tone Works has been tested and works but does NOT come with the 9v power supply. So you will need to purchase one separately. The battery compartment is free of corrosion and the pedal works with batteries also. All of the knobs are functional, and the parameters and fx, including the wah and volume pedal, work perfectly. The pedal will come in its original box. The box does have dents,scratches, and wear. The original manual is not included. However you can download the manual for free from Korg's website or other 3rd party manual providers.
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