Neumann U 87 Ai. Type: Stage/performance, Microphone frequency: 20 - 20000 Hz, Microphone direction type: Omni. Connectivity technology: Wired, Connector(s): XLR3F. Microphone dimensions (D x H): 56 x 200 mm, Microphone weight: 500 g. Current consumption: 0.8 mA, Operating voltage: 3.9 V. Colour of product: Nickel