--- product_id: 4372097 title: "Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch" brand: "shure" price: "€ 16.00" currency: EUR in_stock: false url: https://www.desertcart.pt/products/4372097-shure-545sd-lc-cardioid-dynamic-high-or-low-z-on store_origin: PT region: Portugal --- # Dual-impedance for versatile use Uniform cardioid pattern minimizes feedback Silent magnetic reed on/off switch Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch **Brand:** shure **Price:** € 16.00 **Availability:** ❌ Out of Stock ## Summary > πŸŽ™οΈ Own the stage with the mic that defined a generation! ## Quick Answers - **What is this?** Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch by shure - **How much does it cost?** € 16.00 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/4372097-shure-545sd-lc-cardioid-dynamic-high-or-low-z-on) ## Best For - shure enthusiasts ## Why This Product - Trusted shure brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Feedback-Free Cardioid Pickup:** Exceptional uniform cardioid pattern keeps your sound crisp and feedback-free. - β€’ **Silent On/Off Switch with Lock:** Magnetic reed switch ensures noiseless toggling with a secure lock option. - β€’ **Versatile Dual-Impedance Operation:** Seamlessly switch between high and low impedance for studio or live settings. - β€’ **Classic Retro Design, Modern Reliability:** Iconic chrome styling that’s stood the test of 60+ years with rugged metal build. - β€’ **Optimized for Voice & Instrument Clarity:** Smooth frequency response and humbucking coil deliver pristine audio in any environment. ## Overview The Shure 545SD-LC is a dynamic, dual-impedance cardioid microphone featuring a silent magnetic reed on/off switch with lock, designed for instrument pickup and public address. Renowned as the predecessor to the legendary SM57, it offers exceptional feedback rejection, rugged metal construction, and a smooth frequency response optimized for voice and instrument clarity. Perfect for professionals seeking vintage style with modern performance. ## Description View larger View larger Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch Classic Unidyne instrument mic features selectable dual-impedance operation with a silent on/off switch. Description The Model 545SD is a dual-impedance, unidirectional, dynamic microphone. Shipped connected for low-impedance operation, it features a silent magnetic reed on/off switch. The Classic Unidyne is a favorite for instrument pickup and recording,and can be used on lecterns for public address systems such as those used in political conventions and legislatures, convention halls, hotels, public auditoriums, stadiums, schools, and churches. 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. Features: Optimized performance in voice processing and computer voice recognition applications.Smooth frequency response with excellent fidelity in the voice range.Cardioid pickup pattern and close-talking operation keep unwanted signals and background noise at low levels.Constant output over voice spectrum when close talked.Humbucking coil minimizes undesirable hum effects such as CRT interference.Low-impedance design permits long cable runs in extreme hum fields.Small unobtrusive design does not interfere with CRT visibility.Rugged and reliable for years of consistent operation. ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002JEUSW | | Antenna Location | Voice Recording, Video Recording, Speech | | Audible Noise | 78 db | | Best Sellers Rank | #63,883 in Musical Instruments ( See Top 100 in Musical Instruments ) #242 in Multipurpose Dynamic Microphones | | Brand | Shure | | Built-In Media | Microphone Clip | | Color | silver | | Compatible Devices | Personal Computer | | Connectivity Technology | Wired | | Connector Type | lc | | Customer Reviews | 4.6 4.6 out of 5 stars (83) | | Enclosure Material | Stainless Steel | | Frequency Range | 2050-2700 MHz | | Frequency Response | 20 KHz | | Global Trade Identification Number | 00042406051873 | | Hardware Platform | PC | | Impedance | 150 ohm | | Item Dimensions | 10.1 x 5 x 3.4 inches | | Item Type Name | Instrument Condenser Microphone | | Item Weight | 0.43 kg | | Manufacturer | Shure | | Mfr Part Number | 545DS-LC | | Microphone Form Factor | Microphone Only | | Model Name | language _ tag | | Model Number | 545SD-LC | | Number of Batteries | 1 Lithium Ion batteries required. | | Number of Channels | 1 | | Number of Items | 1 | | Polar Pattern | Unidirectional | | Power Source | Corded Electric | | Signal-to-Noise Ratio | 78 db | | Special Feature | Clip | | UPC | 042406051873 | | Unit Count | 1 Count | | Warranty Description | 2-year limited warranty. | ## Product Details - **Brand:** Shure - **Color:** silver - **Compatible Devices:** Personal Computer - **Connectivity Technology:** Wired - **Connector Type:** lc - **Included Components:** Microphone Clip - **Model Name:** language _ tag - **Polar Pattern:** Unidirectional - **Recommended Uses For Product:** Voice Recording, Video Recording, Speech - **Special Feature:** Clip ## Images ![Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch - Image 1](https://m.media-amazon.com/images/I/511cJBCFLxL.jpg) ![Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch - Image 2](https://m.media-amazon.com/images/I/31gtR06SEXL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Shure 545SD-LC Cardioid Dynamic High or Low Z On-Off Switch - Shure A2WS Locking Microphone Windscreen - Reduces Unwanted Breath and Wind Noise, Black - Compatible with SM57 and 545 Series Mics (A2WS-BLK) - Shure SM57 Pro XLR Dynamic Microphone - Professional Studio & Live Performance Cardioid Mic for Instruments, Recording for Drums, Percussion, & Instrument Amplifier Miking (SM57-LC) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/4372097-shure-545sd-lc-cardioid-dynamic-high-or-low-z-on](https://www.desertcart.pt/products/4372097-shure-545sd-lc-cardioid-dynamic-high-or-low-z-on) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-05*