Thank you for viewing. [Product Name] BOSS KATANA:GO KTN-GO Personal Headphone Guitar Amplifier Used a few times after purchasing new. There is no feeling of use at all. Operation is also good. [Product Description] BOSS KATANA GO A palm-sized guitar/bass headphone amplifier that allows you to enjoy fulfilling performance. Guitar mode with 10 types of amps and over 60 types of effects. Bass mode with 3 types of amps and over 60 types of effects. STAGE FEEL function that brings an immersive sound field to headphones with three-dimensional sound technology. 30 ready-to-use preset memories. Easy-to-see organic EL display. One-touch access tuner function. Bluetooth connection with mobile devices enables wireless audio playback. Rechargeable battery allows for 5 hours of continuous use.