Large Dual-Diaphragm Microphone

Dual-diaphragm cardioid microphone delivers exceptionally smooth proximity control and ultra-wide dynamic range. It features a natural off-axis response, a dual-diaphragm with a gold Mylar diaphragm, 3-stage grille, and internal shock mount.


Product Details

This premium side-address, cardioid condenser microphone features a large dual-diaphragm capsule, optimized for world-class vocal recording and performance applications. With a tailored frequency response and extensive internal and external pop filtering, the single-pattern, dual-diaphragm design of the KSM42, featuring Prethos® Advanced Preamplifier Technology exhibits an exceptionally smooth proximity control and ultra-wide dynamic range. The KSM42 is the premier choice for capturing sophisticated, powerful and intimate vocal performances.

A milestone achievement in sound reinforcement, Prethos Advanced Preamplifier Technology employs transparent internal circuitry architectures that enable unprecedented audio quality and performance.

  • 1 - A42SM Shurelock Rubber Suspension Shock Mount
  • 1 - A42PF Popper Stopper Magnetic Pop-Filter
  • 1 - AK42C Zippered Carrying Case
  • 1 - A42VB Protective Velveteen Pouch
  • 1 - A42OR Spare Set of Rubber Suspension Shock Mount O Rings
  • Highly consistent cardioid polar pattern creates a broad “sweet spot” and natural off-axis response
  • Prethos® Advanced Preamplifier Technology exhibits extremely low self-noise with superior dynamic range, transient response and ultra-low distortion for transparent recording
  • Dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1-inch Mylar® diaphragm
  • Passive back diaphragm delivers exceptional control of low frequency proximity effect
  • Tailored low-frequency roll-off minimizes low frequency room noise
  • Integrated three-stage mesh grille guards against wind and breath noise
  • Open cage ShureLock® rubber suspension shock mount with low-profile Popper Stopper™ magnetic pop filter produces a natural space between performer and microphone
  • Extremely low self noise for critical studio vocal recording
  • Premium electronic components and gold-plated internal and external connectors
  • Durable zinc die-cast housing and hardened low carbon steel grille
  • Internal shock mount to reduce unwanted handling and stand noise


Further Reading

Latest Articles




Swivel Mount


Popstop Windscreen


Elastic-Suspension Shock Mount


Velveteen Pouch


Elastic Bands for KSM42 Shock Mount


Microphone Windscreen


Zippered Carrying Case for KSM42


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User Guide & Specs
Spec Sheet
Find An Answer
Dual Diaphragm Design - Control of Proximity Effect
October 20, 2017

The Shure KSM42 is a cardioid condenser microphone with a dual diaphragm capsule. Traditionally, dual-diaphragm capsules are used to create switchable ...

Other Mics with the A42PF or A42SM
September 15, 2017

Sorry, the A27SM shock mount will not accommodate the A42PF pop filter.  The A42F pop filter only works on the A42SM shock mount.The SM27 will no ...

Prethos™ Advanced Preamplifer Technology
August 31, 2017

As of August 2010, Prethos™ Advanced Preamplifier Technology is incorporated in the KSM44A microphone and the KSM42 microphone. Prethos™ A ...

KSM32 and A42 Accessories
August 31, 2017

KSM32 and KSM42 are identical in size.   A42 accessories will fit KSM32.  ...

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