Detail 01
5Hz to 30kHz ±1/-3dB
Response extends well past hearing range, so the mic adds almost nothing of its own to a measurement.
Product detailSKU #1312048316338
EarthworksM30 30kHz Omnidirectional Measurement Microphone
Independent shopping perspective
The Korena take
A reference measurement mic for tuning rooms and PA systems. For engineers running acoustic analysis, not for recording vocals or instruments.
Strong match
Who this is for
- Room correction and PA tuning with analyzer software
- Measuring speaker frequency response in a treated room
- Checking system alignment where flat response above 20kHz matters
Consider the trade-offs
When to look elsewhere
- Vocal or instrument tracking — this is a tool, not a character mic
- Anyone needing a quick single-mic solution on a budget
- Loud close-mic sources above 142dB SPL
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Omnidirectional pattern
Picks up equally in all directions and has no proximity effect, so room energy is captured as it actually arrives.
Detail 03
30mV/Pa sensitivity
Moderate output. Quiet room measurements will need a preamp with clean gain to stay above the noise floor.
Detail 04
22dB SPL self-noise
Low enough that the mic won't obscure quiet acoustic detail during noise-floor or decay measurements.
Detail 05
142dB SPL max input
Handles a PA at full output without overloading, so you can measure at real working levels.
Detail 06
229mm x 22mm pencil body
Thin barrel scatters less sound around the capsule, which keeps off-axis measurements closer to true.
Final check
Know before you order
- 01Needs 48V phantom power at 10mA from your interface or preamp
- 02XLR cable and a stand or clip are not included
- 03Preamp input should be 600 ohm or higher for correct loading
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use this to record vocals?
You can, but it is built to be neutral, not flattering. Omni means it captures the whole room. Most people use it for measurement and keep a separate mic for tracking.
02Does it come with a calibration file?
Check with the seller before purchasing, as calibration file inclusion varies. The mic's stated response is flat within ±1/-3dB from 5Hz to 30kHz.
03What software does this work with?
Any measurement software that accepts a standard XLR mic input through your audio interface. The mic itself has no software requirement.
04Why does it go to 30kHz if I can't hear that high?
Extended top end keeps phase and time response accurate inside the audible band, which matters for impulse and decay measurements.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
3 detailsSound
- Polar Pattern
- Omnidirectional
- Frequency Response
- 5Hz to 30kHz ±1/-3dB
- Sensitivity
- 30mV/Pa (-30.5dBV/Pa)
1 detailsBody & build
- Color
- Gray
5 detailsConnections & power
- Output
- XLR (pin 2+)
- Min Output Load
- 600 ohm between pins 2 & 3
- Output Impedance
- 100 ohm, balanced (50 ohm ea. pin 2 & 3)
- Power Requirements
- 48V Phantom, 10mA
- Max Acoustic Input
- 142dB SPL
2 detailsSize & weight
- Dimensions L X D
- 229 mm x 22 mm (9 inch x .860 inch)
- Weight
- 0.5
1 detailsOther
- Noise
- 22dB SPL equivalent (A weighted)
