The Shure KSM109 SL microphone, featuring smooth high-end and a tight/controlled low-end, reproduces natural audio. With an extended frequency response of 20Hz to 20KHz, this Shure Microphone audible sound even when spoken in to at soft pitch. This Cable Professional Microphone provides amazing transparency eliminating crossover distortion. Tight cardioid polar pattern of this Shure Microphone cuts-down background noise and discards unwanted signal providing clear audio. Transformerless Class-A preamplifier circuitry design of this Cable Professional Microphone captures only the sound spoken into the mike providing clean audio. The Shure KSM109 SL, with Switchable 15dB Pad, permits input of broader range of SPL outlets.