Pricing and availability
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Average Price: $120
Standard/Professional
$75
$201+
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Price History
Based on price data from 2 merchants for "Shure 545SD-LC". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Shure 545SD-LC is where vintage charm meets modern versatility, making it a prized possession for both studio recording and live setups. As the precursor to the legendary SM57, this Unidyne III dynamic microphone retains its classic allure while offering contemporary functionality. It's renowned for its dual-impedance operation, allowing it to adapt seamlessly to various audio environments. The 545SD-LC’s uniform cardioid pattern is expertly designed to minimize feedback, ensuring clarity and precision whether you're capturing the nuanced tones of an instrument or delivering a powerful speech.
This microphone isn’t just about capturing sound; it's about delivering an experience. With its silent magnetic reed on/off switch, you have the ability to control the mic with ease and discretion, making it ideal for public speaking engagements and live music performances alike. From the hustle and bustle of political conventions to the serene acoustics of a church, the 545SD-LC stands ready to deliver unmatched audio quality. Its vintage pedigree and modern enhancements make the 545SD-LC a staple in any serious audio toolkit.
Key Features:
- Dual-impedance, unidirectional, dynamic microphone
- Silent magnetic reed on/off switch with lock option
- Uniform cardioid pattern minimizes feedback
- Ideal for instrument pickup and public address systems
- Frequency response: 50Hz–15kHz
Product specs
| Microphone Type | Dynamic |
| Polar Pattern | Cardioid |
| Frequency Response | 50Hz-15kHz |
| Output Impedance | 150 ohms (250 ohms actual), optional high impedance setting |
| Sensitivity | Low -58dB (1.3mV), High -35dB (17.6mV) |
FAQs
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What is the primary application for the Shure 545SD-LC microphone?
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The Shure 545SD-LC is a versatile dynamic microphone ideal for both vocal and instrument applications, particularly in live sound and recording environments. Its cardioid polar pattern helps minimize feedback, making it suitable for PA systems.
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How does the Shure 545SD-LC handle feedback in live performances?
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The Shure 545SD-LC features an exceptionally uniform cardioid pattern that effectively minimizes feedback when used in PA applications, enhancing its performance in live settings.
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Does the Shure 545SD-LC offer different impedance settings?
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Yes, the Shure 545SD-LC offers selectable dual-impedance operation, allowing users to choose between low and high impedance settings to match various sound systems and recording equipment.
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What type of on/off switch does the Shure 545SD-LC have?
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The Shure 545SD-LC is equipped with a silent magnetic reed on/off switch, which includes a lock option to prevent accidental activation during use.
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Is the Shure 545SD-LC suitable for studio recording?
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Yes, the Shure 545SD-LC's dynamic design and wide frequency response from 50Hz to 15kHz make it well-suited for capturing both vocals and instruments in studio recording environments.
Videos
Obscure Mics
The Shure 545SD Unidyne III - Obscure Dynamic Microphone Demo Review
Reviews
PROS
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Vintage design with a classic chrome styling appeals to retro enthusiasts
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High clarity with a more airy top end than SM57
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Versatile for various applications: vocals, guitars, drums, and live settings
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Durable construction, withstands falls and rough handling
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Variable impedance option for flexible connectivity
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Excellent for capturing male rap vocals with good response
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Useful on/off switch that locks into position
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Balanced sound, particularly impressive on acoustic guitars
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Slightly brighter sound, reducing the "boxy" midrange of others
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Affordable entry into stereo mic recording
CONS
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Requires high gain on mixers, possibly needing external preamp
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Not suitable for reducing plosives without a pop filter
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Slightly low output may cause background noise at high gain levels
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