Shure 545SD Dynamic Cardioid Microphone with On-Off Switch Dual Impedance

The 545SD features a silent magnetic reed on/off switch with lock-on option. A favorite for instrument pickup and recording the 545SD can also be used on lecterns in public address systems. Exceptionally uniform cardioid pattern minimizes feedback. Dynamic Frequency Response: 50 to 15000 Hz. Microphone rating impedance is 150 ohms 250 ohms actual for connection to microphone inputs rated at 19 to 300 ohms and “Highfor connection to high-impedance microphone inputs.