Neumann U 87 AI MT STEREO Condenser Microphone (Stereo Set, Black)The black U 87 Ai Condenser Microphone from Neumann is a large dual diaphragm condenser microphone. It features three directional patterns, including omnidirectional, cardioid and figure 8. These are selectable with a switch below the head grille and the window above this switch shows the symbol of the selected characteristic. A 10 dB attenuation switch is located on the rear. It enables the microphone to handle sound pressure levels up to 127 dB