The U300 in-ear transmitters offer the option to choose from 12 transmission channels and a transmission RF power of 10 mW. They can also be used in mono or stereo mode. The complex jacks serve as balanced XLR inputs and unbalanced 6.35 mm jacks. The input levels on the left and right can be controlled separately, while two LED chains indicate the sound intensity.

The U300 bodypack receiver features a mini jack for headphone connection, as well as screens for channel, stereo mode, and low battery status. It operates with two AA batteries and has a runtime of 10 hours. A practical controller allows for individual monitoring volume adjustment during performance. A 19" rack assembly kit is included.