This is a multi-effects unit from Donner. It can be used for both guitar and bass, and is recommended for beginners and advanced players alike. It combines several types of effects into one unit, allowing you to create a variety of sounds by combining them. I purchased it in January of this year for 10,000 yen and used it for about a month. Pros: * Rechargeable It's rechargeable via Type-C. It can be used for up to 10 hours. * Easy to use It only requires minimal operations, with buttons for each type of effect, two foot switches on the left and right, and knobs for volume and effects. * Can be connected to headphones You can connect headphones and hear the sound even without an amplifier. You can play without worrying about the neighbors. * Highly versatile You can combine many types of effects. There are already 40 preset effects. Furthermore, you can save up to 80 settings. * Connects to a smartphone app. It can be linked with a dedicated smartphone app and operated remotely. * Compact It's small and easy to carry around. In short, this is recommended for those who are just starting to play guitar! Until you improve, it's better to buy this product, which allows you to create various sounds for the same price, rather than purchasing individual effects that cost several thousand or tens of thousands of yen each.