No problem with use. It's in a clean condition, having been used very little. From the manufacturer: ¥32,340 The Mooer Hornet 15i is a new generation of compact amplifier that inherits the design of the popular Hornet series of compact amps, while incorporating Mooer's new iAMP system. It includes 52 types of amp models and 49 types of effects, and you can set effects and amp models from the app and save them as presets. It can also be used as a Bluetooth mono speaker. You can play guitar along with Bluetooth audio, or use a drum machine, metronome, or looper for various playing styles.