Exceptional Wireless Performance on Any Stage, Anywhere! The Line 6 XD-V55HS digital wireless headset system delivers unmatched digital wireless performance, simplicity, and sound on every stage around the world - license free. Exclusive digital technologies protect you against all types of audio interference, and your setup and operation couldn't be simpler. You just power up, pick a channel, and go... with no hoops to jump through and no required adjustments for you to make.