The Model 55SH provides the Shure classic UNlDYNE 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. The 55SH has a cardioid (unidirectional) polar pickup pattern that minimizes sound pickup from the rear of the microphone. This allows the Model 55SH to be used in close proximity to loudspeakers without creating feedback problems, and it can perform under adverse acoustic conditions where omnidirectional microphones cannot. Features: Classic appearance, modern performance Frequency response tailored for speech, vocals and instrumental music Cardioid directional pattern for optimum performance in adverse acoustic environments Shock-mounted cartridge minimizes stand- Rugged die cast case and mechanical design for reliability under rigorous conditions Self-tensioning swivel mount, permits tilting through 45 degrees forward and 80 degrees backward .