This bodypack from the U300® series from LD-Systems works in the frequency band 514 - 542 MHz and has a mini XLR input with three-level level switch for adaptation to microphones such as active and passive instruments. It has an output power of 10 mW and, due to its frequency response of 25 Hz - 16 KHz, is also suitable for transmitting 5-string bass guitars with a low H-string. The U3051 BP achieves over 10 hours of battery life with two AA batteries, is conveniently synchronized via infrared with the U3051 receiver, and a pilot tone ensures trouble-free operation. The practical standby position of the operating switch enables temporary muting.