This mini amp plugs directly into your guitar or bass for an instant, professional audio signal… anytime, anywhere. The perfect practice tool — listen through headphones, crank it up without disturbing anyone around you! No need for bulky amps. Its built-in amp simulation is tailored to your tone, from ultra clean to heavily distorted. You'll get up to 15 hours of play time with the convenient, built-in Li-ion rechargeable battery — no need to change batteries. To recharge, connect supplied USB cable to computer’s USB port or optional AC adapter.