Check the listing for details. KORG Tone Works AX100G Guitar Modeling Signal Processor Expression Pedal TESTED. Condition: Used. Listed at 69.99 USD. No plug. The KORG Tone Works AX100G Guitar Modeling Signal Processor Expression Pedal is a must-have for any guitar enthusiast. This processor is designed to fit both acoustic and electric guitars, making it a versatile addition to your musical setup. It features a range of effects and a multi-effects capabilities that can help you achieve the perfect sound for your music. With a focus on quality and performance, the KORG Tone Works AX100G Guitar Modeling Signal Processor Expression Pedal is perfect for musicians of all skill levels. It is easy to use and comes equipped with all of the necessary features to help you achieve your desired sound. Whether you are a beginner or an experienced musician, this processor is sure to enhance your playing experience.