Capture presenters and performers at close range with the AT831R cardioid condenser lavalier microphone. Its cardioid pickup pattern concentrates on sound arriving from the front of the capsule while reducing pickup from the rear. This makes it suited to spoken-word reinforcement, lecture capture and other applications where a discreet body-worn microphone must feed a professional audio input. The microphone connects through XLR and operates from phantom power, fitting mixer channels, installed microphone inputs and audio interfaces that provide phantom power. A wired XLR connection avoids the receiver, transmitter and frequency-coordination requirements of a wireless microphone system. The condenser capsule supports detailed vocal capture, while the small lavalier format can be positioned on clothing near the talker. WS-AX-VX-ND-2Y-D corresponds to the AT831R configuration with a cardioid condenser capsule, XLR connectivity and phantom-power operation. Within a lavalier microphone range, the directional cardioid pattern is the important distinction for installations where rearward room sound, monitor spill or nearby sources need more control than an omnidirectional capsule provides. Specify it where the audio system has an available phantom-powered XLR microphone input and the application calls for a wired, body-worn vocal microphone.