Shure SM81 (Pair)

$395.00 to $600.00 Price Tier: High-end

4 Critic Reviews

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Page last updated Jun 09, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated June 9, 2026.

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5.0 (68)

$439.00

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5.0 (12)

$395.00

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4.7 (197)

$439.00 $395.00 $44.00 · All time low

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5.0 (6)

$600.00 5 available Used

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5.0 (42)

$439.00

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5.0 (5)

$395.00

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4.9 (11)

$439.00

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$439.00

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Average Price: $448

High-end/Boutique

$100

$401+

Price Tier

In the Condenser Microphones category, Shure SM81 (Pair) is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

Price History

Based on price data from 7 merchants for "Shure SM81 (Pair)". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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The Shure SM81 is a true workhorse in the world of professional audio, known for its ruler-flat frequency response and exceptional versatility. Ideal for studio recording and live performances alike, this pair of small-diaphragm condenser microphones excels in capturing the nuances of acoustic instruments, from guitars to violins and mandolins, with stunning accuracy. Thanks to its uniform cardioid pickup pattern, the SM81 offers excellent off-axis rejection, ensuring that your primary source remains isolated and clear. Whether you're miking up a choir, capturing the shimmer of overhead cymbals, or recording an acoustic guitar, this mic delivers pristine sound every time.

Durability is at the heart of the SM81's design. Its rugged, vinyl-coated steel construction can withstand the rigors of both studio and live environments. Field-ready for diverse conditions, it operates smoothly across a wide range of temperatures and humidities, making it a reliable companion whether you're on the road or in the studio. The SM81 also sports a 3-position low-frequency response switch and a lockable -10dB pad, providing flexibility and control over your recordings. Add to that its low noise and high output, and you have a microphone that truly stands out for its clarity and resilience.

Key Features:

Small-diaphragm condenser microphone with a frequency response of 20Hz–20kHz
Uniform cardioid pickup pattern for exceptional isolation
3-position low-frequency response switch (flat, 6dB, or 18dB roll-off)
Lockable -10dB pad for handling loud sources
Rugged vinyl-coated steel construction
Low RF susceptibility to minimize radio interference
Includes a swivel adapter, foam windscreen, and carrying pouch

Product specs

Microphone Type	Condenser
Polar Pattern	Cardioid
Frequency Response	20Hz-20kHz
Max SPL	136dB (146dB w/Pad)
Output Impedance	150 ohms
Signal to Noise Ratio	78dB
Self Noise	16dB (A weighted)
Low Cut Filter	80Hz (-18dB/octave), 100Hz (-6dB/octave)
Pads	-10dB
Connector	XLR
Power Source	12-52V phantom power
Dimensions	8.35" x 0.93"
Weight	0.5 lbs.
Included Accessories	Mic Clip, Carrying Pouch, Foam Windscreen, Stand Adapter

FAQs

What is the primary intended application for the Shure SM81 condenser microphones?: The Shure SM81 microphones are primarily designed for studio recording and live sound reinforcement, excelling in capturing acoustic instruments like guitars, pianos, and drums due to their flat frequency response and cardioid polar pattern.
How does the cardioid polar pattern of the Shure SM81 affect its recording capabilities?: The cardioid polar pattern of the Shure SM81 provides excellent off-axis rejection, making it ideal for isolating sound sources and minimizing background noise during recordings.
Are the Shure SM81 microphones suitable for high sound pressure level (SPL) environments?: Yes, the Shure SM81 can handle high SPLs up to 136dB (146dB with the -10dB pad), making it suitable for recording loud sound sources like drums and amplifiers without distortion.
What type of power source do the Shure SM81 microphones require?: The Shure SM81 microphones require 12-52V phantom power to operate, which is commonly supplied by most audio interfaces and mixing consoles.
Does the Shure SM81 include any features to control low-frequency noise?: Yes, the Shure SM81 includes a low cut filter with options at 80Hz (-18dB/octave) and 100Hz (-6dB/octave) to reduce low-frequency noise and rumble during recordings.

Videos

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Audio University

Shure SM81 For Acoustic Guitar [Best Acoustic Guitar Mic Under $500?]

Audio University

ACOUSTIC GUITAR MIC SHOOTOUT! Neumann KM184 - Shure SM81 - AKG 451 - Shure KSM137 - Rode NT5

Tim Nienhuis

Shure sm81 vs Sennheiser e914 overhead test

Fluffy Sound Production

Shure SM81 vs. Audix ADX51 | Drum Overhead Comparison

Novro Studios

Shure SM81

MEI Studio

Small & Large Diaphragm Condenser Mic Comparison | SM81 & TLM 103

The Home Studio Producer

Reviews

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PROS

Excellent for drum overheads, especially hi-hats and ride cymbals
Perfectly voiced hi-pass filters effectively manage room rumble and kick bleed
Provides balanced frequency response for acoustic guitars, avoiding shrill highs and boomy lows
Handles high sound pressure levels without distortion
Delivers clear, uncolored sound suitable for ethnic percussion
Versatile use as stereo pairs for various recording applications
Long-standing studio staple, trusted for over 20 years

CONS

Low sensitivity for a condenser microphone
Pad switch is not incremental, only on or off
Missing lock piece for the pad switch in packaging

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Shure SM81 (Pair).

Use cases and applications

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SM81s excel in recording acoustic guitar in dense mixes, providing clarity and brightness, although they might need additional low-end support.
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For overhead drum recording, SM81s may require additional close mics on toms to supplement low-end capture.
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The vintage SM81 from 1978 is praised for its smooth high frequencies on rhythm acoustic guitar and hi-hats, suggesting superior performance for specific acoustic applications.
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Comparisons

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Compared to SM81s, AKG 414s are recommended for capturing full drum kits without close mics, but are noted as more expensive.
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There are measurable differences in frequency response between older and newer SM81s, with older models exhibiting smoother responses above 3kHz, particularly around 4kHz and 6kHz.
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User experience

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Owners note that the SM81s are challenging to find in stores compared to KSM137s, influencing purchase decisions.
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Setup and maintenance

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Exposure to cigarette smoke over decades may mellow the high-end response of SM81s, potentially improving sound quality for some users.
Source

Build quality

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Older SM81 models may have experienced changes in component quality, such as electrolytic capacitors drying out, affecting tonal characteristics.
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Features and functionality

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The SM81 once had omni capsules available, but they were discontinued due to low sales, indicating a limited but diverse historic functionality.
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Other

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Shure claims minimal changes to the SM81's design over the years, except for body shape, though component improvements may account for tonal variations.
Source

Critic Reviews

The Definitive Shure SM81 Review | 2025

soundref.com

With its neutral, natural sound and superb accuracy, the Shure SM81 remains an industry staple. It's a versatile small diaphragm condenser mic that excels with acoustic instruments and vocals, providing a true-to-life sound reproduction. However, its lower output and sensitivity to plosives might require careful handling and additional gain. While it lacks the character of some competitors, its flat response makes it a reliable workhorse for capturing detail and nuance. Despite minor drawbacks, the SM81 is a solid, reasonably priced choice for both studio and live settings, particularly if precision and clarity are your priorities.

positive

Full Review

Shure SM81 Microphone Review | SoundGale

soundgale.com

The Shure SM81 is a solid choice for recording musical instruments, boasting a flat frequency response and durable build. Its sound quality and customization options make it suitable for a variety of instruments. However, it shows its age compared to modern competitors like the Shure KSM137, which offers better features and noise handling. While the SM81 remains reliable, its price may not justify its older technology when newer, similarly priced options provide more advanced capabilities. Ideal for those who prioritize a classic, uncolored sound, but consider looking at newer models for enhanced features.

neutral

Full Review

Shure SM81-LC: Cardioid Instrument Mic Review | Microphone Geeks

microphonegeeks.com

The Shure SM81 stands tall as an industry staple for studio recordings, boasting an impressively neutral and pure sound profile. Its ability to capture subtle details without harshness makes it a top pick for recording guitars, pianos, and cymbals, delivering a rich low end that's easy to manage with built-in low-cut filters. Its rock-solid build ensures longevity, though its lower sensitivity might require more amplification, potentially introducing noise. While the price tag may deter some, its unparalleled clarity and versatility justify the investment, especially for those seeking pristine overheads. However, potential buyers should note its lack of an internal shock mount and the absence of a built-in pad. Overall, the SM81 remains a favorite for seasoned engineers seeking quality without compromise.

positive

Full Review

Shure SM81 Review: Top Instrument Mic For Pros?

demomentor.com

The Shure SM81 is a versatile workhorse perfect for capturing acoustic instruments with pristine clarity. Its rugged build handles studio and live settings effortlessly, while a flat frequency response ensures uncolored sound. The mic excels in rejecting off-axis noise, which is a boon for home recording, though it does require phantom power. While its price might be daunting for beginners, it's worth every penny for serious musicians. The few drawbacks include its sensitivity to wind noise outdoors and potential overkill for simple vocal needs. Overall, it’s a robust choice for those committed to quality recordings.

positive

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