Check the listing for details. DigiTech Genesis 1 Guitar Preamp / Effects Modelling Device AC adapter included. Condition: Used. Listed at 49.95 USD. The DigiTech Genesis 1 Guitar Preamp / Effects Modelling Device is a digital processor designed for electric guitars. With advanced technology, the device offers a wide range of preamp and effects modeling capabilities to enhance the tone and sound of your guitar. As part of the trusted DigiTech brand, this model is known for its high-quality performance and durability, making it a popular choice among musicians and guitarists looking to expand their sound.