Shure 545SD-LC

Overview

The Shure 545SD-LC is a dynamic instrument microphone designed to deliver clear and focused sound capture for musicians, presenters, and audio engineers. Built around the classic Unidyne design, it features a cardioid pickup pattern that isolates the intended sound source while minimizing background noise. Its switchable low and high impedance options provide flexibility for different setups, whether running long cables or connecting directly to amplifiers and PA systems.

Key features

• Cardioid pattern that reduces feedback and concentrates on the sound source directly in front of the microphone, ensuring clarity in live and studio environments
• Switchable low or high impedance operation to accommodate various audio equipment and cable lengths without signal degradation
• Magnetic reed on/off switch allows silent muting during performances, with an optional lock to prevent accidental shutdowns when mounted
• Standard three-pin XLR output for seamless connection to mixers, audio interfaces, and stage boxes
• End-address design that directs the microphone toward instruments or speakers for precise sound capture
• Rugged yet lightweight housing built to withstand the demands of touring and frequent use while remaining comfortable to hold or mount
• Versatile use cases including instrument recording, public speaking, and live sound reinforcement

Key specs

• Microphone type: Dynamic
• Polar pattern: Cardioid
• Impedance: Switchable low or high
• Connector: Standard three-pin XLR
• Switch: Magnetic reed on/off with optional lock
• Design: End-address
• Weight: Lightweight for ease of handling

Connectivity and compatibility

The microphone’s standard XLR output ensures compatibility with a wide range of professional audio equipment, including mixers, audio interfaces, and PA systems. Its dual impedance feature allows it to adapt to both low-impedance setups for long cable runs and high-impedance devices like guitar amplifiers, making it a flexible choice for various stage and studio configurations.

Performance and reliability

Thanks to its cardioid pattern and classic Unidyne architecture, the microphone delivers focused sound capture that minimizes ambient noise and feedback. The magnetic reed switch provides silent muting without introducing clicks or pops, which is essential for live performances and presentations. Its rugged construction ensures durability on the road, while the lightweight design keeps it comfortable for extended use.

Ideal uses and environments

This microphone works well in rehearsal spaces, school auditoriums, broadcast booths, and touring rigs. It is particularly effective for capturing snare drums, guitar cabinets, acoustic instruments, and spoken word. Its reliable performance and durable build make it a strong choice for musicians and audio professionals who need consistent sound quality in both live and studio settings.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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