545SD on August 18, 2015 | Marketing Team Classic Unidyne® Instrument Microphone Classic Unidyne instrument mic features selectable dual-impedance operation with a silent on/off switch. The predecessor to the SM57, the 545SD Classic Unidyne® Instrument Microphone is a dual-impedance, unidirectional, dynamic microphone. Shipped connected for low-impedance operation, 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. Features Exceptionally uniform cardioid pattern minimizes feedback Selectable dual-impedance operation Silent magnetic reed on/off switch with lock option Applications Presentation Form Factor Handheld Model Line Classic Available Options 545SD-LC Cable not included
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