The SHURE's 503BG was designed for computer speech recognition applications and provides great audio quality while eliminating background noise. This dynamic microphone is equipped with a low-impedance moving coil transducer with an integrated humbucking coil and a two-conductor shielded cable with built-in strain relief. When employed near to the sound source, it generates a frequency response with a practically constant output voltage across the voice spectrum. The casing of the 503BG is made of aluminium and has a black enamel finish. It uses a standard 5/8"-27 thread to attach to a gooseneck, a permanent pipe, or a microphone stand.