Practice your bass without upsetting the neighbors using the amPlug2 FLY Bass Headphone Amp from Blackstar. This device is a small amp that plugs into the output jack of your bass, utilizing a 1/4" instrument plug that rotates 180. This plug accommodates many types of basses. Once connected, the amPlug2 will amplify the bass into your attached headphones. The amPlug2 uses an analog circuit to emulate a bass amp and control the amount of gain. There are three amp voicing modes: Classic, Modern, and Overdrive. You have six built-in rhythm patterns that you can use for practicing. Use the multifunction button to tap out a tempo or to select a rhythm. An aux input allows you to plug in an external music source to jam along with your favorite rhythm section. Gain, tone, and volume controls let you fine-tune your sound. The device gives you 17 hours of battery life.