Ear Force XL1 Gaming Headset and Amplified Stereo Sound - Xbox 360 (Certified Refurbished) Amplified Audio-Enhances game sounds for a more immersive experience In-line Amplifier-Quick access to gaming audio controls Bass Boost-Built-in bass boost adds depth and realism to the game audio Microphone Monitor-Let's you hear what you're saying USB Powered-No batteries required