The sound of the world's best wired mics, wireless.XD-V55 from Line 6 sets a new standard in professional handheld wireless systems for performing vocalists. Featuring exclusive microphone modeling technology, XD-V55 delivers the sound of the world's most popular wired mics combined with a proven 4th-generation digital wireless platform, the most mature in the industry. With 12 channels of 24-bit, 10Hz-20kHz, compander-free performance, the XD-V75 provides unmatched full range audio clarity and license free operation worldwide. Microphone Modeling Technolgy:XD-V55 gives you instant access to stunning models of four microphones. Choose from models based on wired microphones including the Shure SM58, Shure SM75 and the Sennheiser e 835.Superior vocal reproduction: The signal from XD-V55 is so clear and strong that it sounds and performs like a wired microphone. Unlike traditional analog wireless systems, the XD-V55 does not use signal companding, so the full 113dB dynamic range (A weighted) is available at all times - just like a wired mic.2.4GHz band operation, license free. The XD-V75 operates in the 2.4GHz band, which is free from interference due to TV broadcast, public safety announcements, cell phone towers and other transmitting devices. Encoded DCL (Digital Channel Lock) technology prevents reception of any audio interference from other 2.4 GHz devices and ensures signal integrity. XD-V75 systems are fully FCC compliant and operate license free worldwide. One-step setup: Choose a channel on the transmitter and receiver and they lock together automatically - job done. Up to 12 XD-V55 systems can be used simultaneously. Ready for the road: The handheld transmitter is built to touring-standards, with a robust metal body that's highly resistant to handling noise. The XD-V55 receiver is housed in a robust aluminum chassis. Three 5-segment LEDs give constant visual feedback to monitor RF strength, battery status and all audio levels.