The predecessor to the SM57, the 545SD Classic Unidyne Instrument Microphone is a dual-impedance, unidirectional, dynamic microphone.. Shipped connected for low-impedance operation, it features a silent magnetic reed on/off switch. This instrument microphone delivers an exceptionally uniform cardioid pattern to minimize feedback. It features a silent magnetic reed on and off switch with lock-on option and selectable dual-impedance operation
The 545SC is a favorite for instrument pickup and recording, and can be used on lecterns for public address systems such as those used in political conventions and legislatures, convention halls, hotels, public auditoriums, stadiums, schools, and churches.
NOTE: 545SD-LC -- Cable Not Included