The Shure MX202B is a Microflex Overhead Microphone. It is hard to believe that such small, unobtrusive microphones can produce such great sound, but it's true. Available in black or bright-white finishes, and with in-line or plate mount preamps, MX202 Microflex Overhead condenser microphones capture high-quality sound in a compact, adjustable package. Each model features a choice of interchangeable cardioid, supercardioid, or mini-shotgun condenser microphone cartridges attached to a flexible, four-inch gooseneck with a 30-foot cable. Product Specifications: Frequency Response: 50–17000 Hz Output Impedance: 180 Ω Output Configuration: Active Balanced Dynamic Range: at 1 kΩ Load 96.2 dB Common Mode Rejection: 45.0 dB minimum Operating Temperature Range: –18° C to 57° C (0° F to 135° F) Relative Humidity: 0 to 95%