Shure KSM42/SG Large-diaphragm Condenser Microphone


95 out of 100. Incorporating 30+ ratings and reviews.

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Shure KSM42 Large-diaphragm Condenser Microphone

Gearank High Notes

Gearank Recommended

The KSM42/SG appeared on our recommended list for Large Diaphragm Condenser Mics Under $1000 from April 2021 through June 2022.

It has also appeared on our Studio Mics For Vocals Under $1000 list since April 2021.

See our Current Recommendation

Hands On Reports

Website Source *Rating Value
Post Magazine Luke Harper 98/100
Tape Op Garrett Haines 97/100
*Displayed values are prior to the Gearank Algorithm's adjustments it makes when evaluating the source.


Having a large "sweet spot" is usually reserved for studio equipment like monitor speakers. Mics also have a "sweet spot" with regards to the proximity effect. speak too close or too far, the frequency response, particularly the low end changes drastically.

The Shure KSM42 (The SG designation refers to the included shockmount and pop filter) is a mic designed to have a large sweet spot.

Whether you're up against the mic delivering a fiery take or further away to record singing while playing guitar, the Shure KSM42 retains a relatively consistent frequency response.

Recording long format speech requires a consistent tone, especially for voice overs and dubbing. The KSM42 excels in these aspects which is why it has earned a cult following among these users.

The mic tends to run a little hot to the preamp so gain adjustment may be needed to avoid overdriving your preamps.

If your primary focus is capturing speech and voice-over work, or if you prefer a mic that stays consistent with singers that move around the mic a lot, the KSM42 is a good choice.


  • Type: Condenser
  • Polar Pattern: Cardioid
  • Frequency Response: 60Hz-20kHz
  • Impedance: 147 ohms
  • Max SPL: 139dB
  • Power Requirements: +48V

Frequency Response and Polar Pattern Charts

Shure KSM42/SG frequency response chart

About the Author

Raphael PulgarRaphael Pulgar

I've been an audio engineer for 20 years specializing in rock and metal recordings. I also play guitar and produce original music for my band and other content creators.