Earthworks M30

Small-diaphragm Wide Spectrum Omnidirectional Measurement Microphone with Electronic Calibration Files
Earthworks M30 image 1
Earthworks M30 image 1
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Earthworks M30
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The Measurement Mic You Need When 20Hz-20kHz Is Not Enough

Ready to align your system? Don't rely on just any old reference microphone. Trust Earthworks. These guys have some of the most accurate microphones on the planet. This is a FIRST-CLASS reference microphone. Use it with your audio-band measurement system to get honest results, so you can tune accordingly.

Earthworks M30 Omnidirectional Reference Microphone Features at a Glance:
  • Small-diaphragm condenser reference microphone
  • Features an omnidirectional pickup pattern
  • Picks up an extremely accurate frequency response from 9Hz-30kHz
  • Includes Electronic Calibration Files
  • Requires +48V phantom power

Additional Media

M30 Spec Sheet
M30 User Manual
Studio Microphone Buying Guide

Tech Specs

Microphone Type Condenser
Polar Pattern Omni
Frequency Response 5Hz-30kHz
Max SPL 140dB
Output Impedance 65 ohms
Self Noise 20dB (A weighted)
Connector XLR
Weight 0.5 lbs.
Manufacturer Part Number M30

Customer Reviews

Based on 1 review
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not for everything, but great at what it does

It's supposed to be a measurement microphone, but I love my M30 for recording. This is an incredibly accurate microphone, which is simultaneously a good thing and a bad thing. Whatever the source sounds like is what you hear on the recording. If you have a good room, a good instrument, and take the time to find the right placement, this mic will make all the difference in getting a great "you are there" sound. But one downside is its clarity. If either your room or your instrument sucks, the M30 will make it glaringly obvious. Also, the mic's sensitivity can be a drawback. I used it for a drum overhead one time (of many), and kept hearing a "breathing" noise between takes. The noise nearly drove me crazy as I tried to figure out what it was and where it was coming from. It turned out to be the M30 (positioned at four feet over the drummer) picking up the breath of the drummer. The noise floor on this mic is very, very low. It allows you to hear the smallest amplitude noise clearly. The M30 has no coloration. The frequency graph for mine has a variation from unity of less than 0.2 dBu across the spectrum (up to 22kHz). There is no "hype" or "thickness" or "grain" added to your sound. What's there is there, as far as sound is concerned. If you want "color", use a different mic. But now that I've complained about clarity, sensitivity, and a lack of coloration, those are the reasons I keep reaching for the M30. It works well as a drum overhead, vocal (at a distance!), acoustic guitar, strings, and piano mic. Bottom line: a great mic, but only if you have a quality source and a quality room. It's not my "desert island" mic though, which is my only reason I can't give it a full five stars.
Music background: Recording Engineer
See also: Condenser Mics, Earthworks, Earthworks Condenser Microphones, Earthworks Condenser Microphones