Turtle Beach Ear Force Z22 Amplified PC Gaming Headset Adjustable Bass and Treble Boost - Tune bass and treble levels to add depth and realism Dynamic Chat Boost - Automatically raises the volume of chat during intense, explosive game situations Variable Mic Monitor - Adjust the volume of your voice in the headset while speaking Independent Volume Controls - Separate game and chat volume controls plus mic mute right on the inline amp Phone/Music Input - Connect a mobile phone or digital media player to take calls or enjoy your favorite music while you game USB Powered - No AC adapters or batteries ever required