The classic look and feel from the 50"s and 60"s Shure"s Unidyne II mic has been updated in the 55SH Series II. This is a cardiod dynamic mic designed for vocal reproduction. A nostalgic reproduction, this model has modern performance characteristics, like 50-15,000 Hz frequency response. Instantly recognized by audiences and performers worldwide, this classic mic was among the originators of the Shure sound. Low-impedance mic. The Model 55SH Series II provides the Shure classic UNIDYNE� II design coupled with modern acoustic components to meet today"s performance standards. This microphone is excellent for vocal pickup with its characteristic Shure presence peak.