[Open Box] Dayton Audio iMM-6 Calibrated Measurement Microphone for iPhone, iPad Tablet and Android

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Dayton AudioSKU: K633-OPEN | UPC: 848791000331
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The Dayton Audio iMM-6 is a professional-quality measurement and recording microphone that is designed to work with the entire suite of Apple "iDevices" – iPad, iPhone, and iPod (with 3.5 mm jack). The rugged construction and compact size make it the perfect companion for audio professionals who must work on-location performing acoustic analysis, monitoring audio levels, or recording. Each iMM-6 is individually hand-calibrated using a laboratory-standard measurement microphone, for consistent, repeatable measurements that match the level of precision previously offered only by expensive stand-alone microphones.

Dayton Audio's iMM-6 is also compatible with Android and Microsoft devices that use a 3.5 mm TRRS jack. A headphone/line-out is built in for monitoring the recorded signal, and a kickstand elevates and angles the measurement capsule for more direct measurements. Each iMM-6 is ruggedly built with high-quality components. A sturdy carrying case with foam insert is included.

A unique serialized calibration file is available for the iMM-6. This calibration file can be used by most audio-analysis apps for the iPad, iPhone, and iPod Touch (see compatibility list for recommendations). Visit the Dayton Audio calibration download tool, where you will be prompted to enter the serial number from the case of your iMM-6. After entering the serial number, your download will start.


  • Precision condenser microphone for critical measurement
  • For use with any smartphone or tablet with a 3.5 mm TRRS headset jack
  • True omnidirectional pattern with calibrated flat frequency response
  • Headphone/Line Out pass-through jack for test signals or listening
  • Kickstand feature elevates and angles device and microphone capsule
  • Rugged construction with high-quality components

Capsule type: Precision 6 mm electret condenser

Polar Response: True omnidirectional

Frequency response: 18-20,000 Hz, ± 0.5 dB (calibrated) • Impedance: 200 ohms

Sensitivity at 1 kHz into 1K ohm: 10 mV/Pa (-40 dBV, re. 0dB = 1V/Pa)

Maximum SPL for 1% THD @ 1,000 Hz: 127 dB

S/N ratio: 70 dB (A-weighted, varies depending on host device)

Connector: Gold-plated 3.5 mm TRRS

Weight: Ultra-light 7.6 grams

California Prop 65

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