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.

  • 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 to protect the cartridge grille from accidental drops or misuse
  • Internal shock mount to reduce unwanted handling and stand noise

Why are there no switchable settings (pad, low-cut filter) on the KSM42?

The design intent of the KSM42 was to craft a large-diaphragm side-address microphone for the primary application of human voice in controlled environments. Much forethought went into crafting the dual-diaphragm capsule to guarantee superior proximity control and a generous and broad “sweet spot”, with extremely consistent sound quality below 1000Hz. With a max SPL of 139 dB and a gradual low-end frequency roll-off built in, pad and filter settings become redundant.

What is Prethos™ Advanced Preamplifier Technology?

Prethos™ Advanced Preamplifier Technology consists of highly sophisticated, extremely transparent internal circuitry architectures that enable unprecedented seamless audio, maximizing audio quality for premium microphone performance.

Suspenstion Shock Mound with magnetic Pop Filter

The KSM42 ships with an open cage ShureLock® rubber suspension shock mount and a low-profile Popper Stopper™ magnetic pop filter. This allows to setup the microphone and shock mount always with the same distance.

Premium components

The KSM42 features a dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1-inch Mylar® diaphragm, premium electronic components and gold-plated internal and external connectors.

Amount Part Title
1 Shurelock Rubber Suspension Shock Mount Part A42SM
1 Popper Stopper Magnetic Pop-Filter Part A42PF
1 Zippered Carrying Case Part AK42C
1 Protective Velveteen Pouch Part A42VB
1 Spare Set of Rubber Suspension Shock Mount O Rings Part A42OR

Technical specifications

494 g
Height x Width x Depth:
185.4 × 55.9 × 55.9 mm
Frequency Response:
60 Hz – 20 kHz
Frequency Response:
-37.00 dBV/Pa – 14.10 mV/Pa
Equivalent Selfnoise:
8.5 dB(A)
Sound Pressure:
2500 Ω load: 139 dB SPL, 1000 Ω load: 139 dB SPL
Transducer Type:
Polar Pattern:
Switchable low cut:
3 Pin XLR
Interchangeable Capsule:
Main Functionality:
Headphone Output:
Requires Phantom Power:
48v DC VDC
Frequency Response Curve Image:
Shure Large Dual-Diaphragm Microphone                    Frequency Response Curve Image