ATW-1101/L System 10 Wireless Lavalier Unit Features at a Glance: Affordable digital wireless unit Includes an Audio-Technica MT830cw lavalier mic Clear sound quality and rock-solid, dependable performance Advanced 24-bit operation in the 2.4GHz range Automatic frequency scanning finds an open channel at the touch of a button True-diversity operation selects the better signal from the 2 receiver sections, reducing dropouts Up to 8 units can be used together simultaneously Balanced XLR and unbalanced 1/4" output jacks enable use with a wide variety of audio gear Ground-lift switch helps eliminate audible hum caused by ground loops between the sound system and receiver