Grab your guitar or bass, connect the BOSS JS-10, and impress your audience! The eBand JS-10 is small, compact, and offers a top-notch, extensive feature set, delivering an ultra-rich 2.1 sound enhanced with professional BOSS effects. Jam along to a huge selection of built-in tracks and audio loops, add your own songs, or play along with songs from connected USB sticks. You can independently change the key and tempo without sacrificing quality. Additionally, you can record your own performance along with the playback. There has never been a better way to practice!.