Shure

Shure 545SD-LC Cardioid Dynamic Microphone

4.7 (205 reviews)

Capture Classic Sound with the Shure 545SD-LC MicrophoneThe Shure 545SD-LC Cardioid Dynamic Microphone delivers legendary Unidyne performance with selectable dual-impedance operation and a silent on/off switch. Ideal for instrument pickup, recording, and public address systems. Type: Cardioid D...

$99.95*$149.00Save 32%
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Capture Classic Sound with the Shure 545SD-LC Microphone

The Shure 545SD-LC Cardioid Dynamic Microphone delivers legendary Unidyne performance with selectable dual-impedance operation and a silent on/off switch. Ideal for instrument pickup, recording, and public address systems.

  • Type: Cardioid Dynamic Microphone
  • Impedance: 150 Ohm
  • Polar Pattern: Unidirectional
  • Switch: Silent magnetic reed on/off switch with lock option

Features:

  • Optimized for voice processing and computer voice recognition
  • Smooth frequency response with excellent fidelity in the voice range
  • Constant output over voice spectrum
  • Humbucking coil minimizes hum effects
  • Low-impedance design permits long cable runs
  • Rugged and reliable construction

Specifications:

  • Microphone Form Factor: Microphone Only
  • Item Dimensions (L x W x H): 10.1 x 5 x 3.4 inches
  • Power Source: Corded Electric
  • Signal-to-Noise Ratio: 78 dB
  • Hardware Platform: PC
  • Number of Channels: 1
  • Item Weight: 15.2 ounces (0.43 Kilograms)
  • Connector Type: LC
  • Special Feature: Clip
  • Compatible Devices: Personal Computer

Included Components:

  • Microphone
  • Microphone Clip (Shure A25D)

Key Features

Exceptionally uniform cardioid pattern minimizes feedback

Selectable dual-impedance operation

Silent magnetic reed on/off switch with lock option

The predecessor to the SM57

A favorite for instrument pickup and recording, the 545SD can also be used on lecterns in public address systems

Includes Shure A25D microphone clip

Specifications

Microphone Type
Cardioid Dynamic
Polar Pattern
Cardioid (exceptionally uniform)
Impedance
Selectable dual-impedance
Switch
Silent magnetic reed on/off switch with lock option
Included Accessory
Shure A25D microphone clip
Recommended Use
Instrument pickup, recording, lecterns in public address systems

Pros & Cons

👍 Pros

  • The Shure 545SD-LC features an exceptionally uniform cardioid pattern, which effectively minimizes feedback in live or recording settings.
  • It offers selectable dual-impedance operation, providing versatility for connecting to various audio equipment.
  • Equipped with a silent magnetic reed on/off switch, the microphone allows for quiet muting during performances or presentations.
  • The on/off switch includes a lock option, preventing accidental power changes during use.
  • This microphone comes with a Shure A25D microphone clip, offering a convenient mounting solution right out of the box.

👎 Cons

  • As the "predecessor to the SM57," it might not incorporate the latest advancements or acoustic refinements found in newer models.
  • The selectable dual-impedance operation, while versatile, may require user knowledge to set correctly for optimal performance with different devices.
  • The microphone's primary applications for instrument pickup and public address systems might mean it's not optimized for all vocal types or recording scenarios.
  • Specific technical specifications like frequency response, sensitivity, or max SPL are not detailed, making it harder to assess its precise audio capabilities.
  • The mention of it being a predecessor could imply that replacement parts or service might become less available over a very long period.

Frequently Asked Questions

The Shure 545SD-LC features an exceptionally uniform cardioid pattern, which is designed to minimize feedback effectively.
Yes, the Shure 545SD-LC microphone is equipped with selectable dual-impedance operation.
It includes a silent magnetic reed on/off switch, which also features a lock option to prevent accidental changes.
Yes, while it is a favorite for instrument pickup and recording, the 545SD is also suitable for use on lecterns in public address systems.
The microphone comes with a Shure A25D microphone clip.