The Lectrosonics 400 Series wireless microphone systems combine digital hybrid technology, diversity reception and rugged components to achieve pristine audio signals at long range. 

The Lectrosonics UM400 is a UHF body-pack transmitter. The transmitter features 256 user selectable UHF frequencies and digital hybrid signal transmission for optimum range while minimizing noise. Incoming audio signal is digitized at 24-bit resolution, eliminating the noise and artifacts associated with analog compandors. The result is greater range with minimal noise. A TA5-male input is compatible with any microphone or cable featuring a TA5 connection. The input level is variable, allowing use with low impedance mics, electret lavalier mics with positive or negative bias and line level devices. The receiver features a comprehensive LCD and low cut filter. A full 100mW output power is achieved on a single 9V battery.