Purchased from a musical instrument store on December 30, 2020. Used only in a room. Used for about 3-4 months after purchase. How about it for guitar beginners? By connecting via Bluetooth, you can play along with music streamed from your smartphone or tablet. From the BOSS/KATANA series, known for its powerful sound, comes the world's first completely wireless amplifier that allows you to enjoy playing without any cable connections! A dedicated transmitter is also included, so you can experience wireless from the day it arrives! ■Features ・A completely wireless guitar amplifier that reproduces high-quality guitar sound with ultra-low latency thanks to BOSS's unique technology. ・A custom wireless transmitter that can be attached to guitars of all shapes and can be charged in the amplifier's dock. ・The transmitter can be used continuously for up to 12 hours on a single charge, and has a power-saving design that automatically goes into standby mode when not playing for a certain period of time. ・The transmitter's sensor detects vibrations and instantly resumes wireless connection from standby mode. ・Equipped with the same expressive premium sound as the higher-end models of the KATANA series, as well as 5 types of amplifier types and over 50 BOSS effects. ・Built-in memory function that can store up to 6 amplifier and effect settings. ・A powerful stereo speaker system with a maximum output of 30W, enabling high-quality audio playback. ・Connect to the dedicated iOS/Android app BOSS TONE STUDIO via Bluetooth to adjust the sound settings at your fingertips.