Size: Instrument MicThe Audio2000'S ADM135I is a professional unidirectional dynamic bass drum microphone with a built-in acoustic pop filter, rugged construction, and a steel mesh grill. A super efficient magnetic circuit design with a premium magnet element provides maximum output level for an improved signal-to-noise ratio for bass drum and sound reinforcement applications. Incorporated with an extremely light weight diaphragm, the low impedance capsule of the ADM135I inheres excellent transient responses and a wide frequency range with the results of a transparent presentation of sound amplification. Throughout the ADM135I's full frequency range, the cardioid pattern stays uniform and symmetrical to significantly cut off any feedback and off-axis coloration.