{"product_id":"shure-545sd-lc-cardioid-dynamic-microphone-classic-unidyne","title":"Shure 545SD-LC Cardioid Dynamic Microphone - Classic Unidyne","description":"\u003cp\u003eOur review of the Shure 545SD-LC finds a rugged, no-nonsense instrument microphone aimed at musicians and live-sound technicians who want a proven tonal character and reliable operation. The single biggest reason to consider the 545SD is its exceptionally uniform cardioid pattern, which keeps close-miking focused and reduces feedback in live and loud stage situations. Shipped for low-impedance use and fitted with a silent magnetic reed on\/off switch, this microphone is clearly built for instrument pickup, lectern work, and recording environments where dependability matters.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCardioid pattern:\u003c\/strong\u003e The exceptionally uniform cardioid polar pattern keeps instrument and vocal pickup focused while minimizing stage feedback for live use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-impedance operation:\u003c\/strong\u003e Selectable high or low Z lets the user match the mic to consoles and preamps for flexible use on stage or in the studio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilent on\/off switch:\u003c\/strong\u003e The magnetic reed switch offers quiet operation and a lock option so the mic can be muted without handling noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic Unidyne design:\u003c\/strong\u003e As the predecessor to the SM57, the 545SD delivers the tonal characteristics favored for instrument recording and pickup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for durability:\u003c\/strong\u003e The microphone is constructed to withstand regular gigging and handling, making it a solid long-term choice for musicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded clip:\u003c\/strong\u003e Ships with the Shure A25D microphone clip for secure mounting on stands and instrument rigs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 545SD suits working musicians, live sound engineers, and small-studio recordists who need a reliable instrument mic with a classic Unidyne voice and robust build. It is especially appealing for guitar amps, snares, and lectern use where feedback rejection and focused pickup are priorities.\u003c\/p\u003e\n\u003cp\u003eThose seeking modern condenser sensitivity, ultra-low self-noise for quiet vocal overdubs, or features like onboard EQ or digital connectivity should look elsewhere; the 545SD is a dynamic, rugged instrument microphone rather than a studio condenser for pristine vocal detail.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReliable, time-tested cardioid pattern that reduces feedback on stage.\u003c\/li\u003e\n\u003cli\u003eSelectable dual-impedance operation provides flexibility with different systems.\u003c\/li\u003e\n\u003cli\u003eDurable construction and an included A25D clip make it gig-ready out of the box.\u003c\/li\u003e\n\u003cli\u003eSilent magnetic on\/off switch adds practical control without handling noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBeing a dynamic instrument mic, it has higher self-noise and less sensitivity than condensers for very quiet studio vocal work.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed impressions of noise level depending on setup and gain staging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e545SD-LC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eCardioid dynamic (Classic Unidyne)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003eSelectable high or low Z (shipped low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch\u003c\/td\u003e\n\u003ctd\u003eSilent magnetic reed on\/off with lock option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded accessory\u003c\/td\u003e\n\u003ctd\u003eShure A25D microphone clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary use\u003c\/td\u003e\n\u003ctd\u003eInstrument pickup, recording, lectern and public address\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Shure 545SD-LC remains a practical, value-oriented choice for players and live engineers who want the classic Unidyne sound and robust, feedback-resistant cardioid pickup. It is a good investment for instrument miking and PA lectern work where durability and simplicity matter, offering clear value compared with modern specialty mics.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this microphone be used for guitar cabinets?\u003c\/strong\u003e\u003cbr\u003eYes. The 545SD's cardioid pattern and tonal character make it well suited to close-miking guitar amps and other instruments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the on\/off switch noisy?\u003c\/strong\u003e\u003cbr\u003eNo. The microphone uses a magnetic reed switch designed for silent operation and it also offers a lock option to prevent accidental switching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require phantom power?\u003c\/strong\u003e\u003cbr\u003eNo. The 545SD is a dynamic microphone and does not need phantom power; it is shipped set for low-impedance operation.\u003c\/p\u003e","brand":"Shure","offers":[{"title":"Default Title","offer_id":48638161092827,"sku":"B0002JEUSW","price":100.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51P5B9CBJYL._AC_SL1500.jpg?v=1778737151","url":"https:\/\/gearmusthave.com\/products\/shure-545sd-lc-cardioid-dynamic-microphone-classic-unidyne","provider":"GearMustHave","version":"1.0","type":"link"}