Classic Instrument Microphone

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.


Product Details

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.

  • 1 - A25D Microphone Clip
  • Exceptionally uniform cardioid pattern minimizes feedback
  • Selectable dual-impedance operation
  • Silent magnetic reed on/off switch with lock option





Microphone to USB Adapter


Locking Microphone Windscreen


Microphone Clip


Snap-in Shock Stopper Mount


Digital Audio Interface


Dual Microphone Mount


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User Guide & Specs
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Microphones used by the Beatles
October 10, 2018

The Beatles used a variety of microphones for live PA sound. Photos in the Shure archives show the Beatles using the Shure 545, the Shure 546, and th ...

545 or 565 mic with the 4 pin Amphenol connector
September 20, 2018

We can tell you what pins to use at the microphone connector. Your 545 microphone has a four pin MC4F Amphenol connector. Pins 1 and 2 of this connect ...

Amphenol to XLR adapter
July 12, 2018

Switchcraft offers the model L3MN adapter. The Amphenol connector in the mic is removed and the wires unsoldered. The wires are re-soldered to the XL ...

Variations of the 545 microphone
March 14, 2018

The current model of the 545 is the 545SD-LC. It is a Unidyne III design.Any Shure mic with 545 in the model number is a Unidyne III design.The Amphen ...

Comparable Products


Dynamic Instrument Microphone

A snare crack. An arpeggiated chord. A powerful saxophone solo. Whether on stage or in the studio, the notes that flow from your instrument connects your audience on a visceral level. And such sounds need a mic that can handle its strength. For every acoustic condition, the SM57 delivers the power of your playing to every fan in the house.


Dynamic Instrument Microphone

Dynamic instrument microphone provides high gain before feedback in demanding environments. It features a steel mesh grille for durability, shock mount to minimize transmission of unwanted noise, and a neodymium magnet for high signal-to-noise ratio.