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NaTCH Engineering  


The Mike



01728 723306


01728 723306


0871 247 4524


07970 865730

2 Station Terrace



IP13 9EF  UK


Station Terrace

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The Audio Technica ATM33aMeasurement microphones generally don't make good testing mikes. They have omni directional characteristics, so most of the measurement is about the noise environment and room reflections rather than the test speaker.  In addition they are expensive, frequently need dedicated pre-amplifiers and power supplies, and are just not robust enough for the production environment.

The linearity and long term stability that make a measurement microphone a measurement microphone are not needed with comparative testing.  Changes in your microphone's sensitivity and linearity are accommodated by the periodic re-calibrations.

Any reasonable quality microphone with a cardioid characteristic and an acceptably extended high frequency response is suitable.  We supply and recommend the Audio Technica ATM33a.

Mikes with a hyper cardioid characteristic do give greater noise isolation but they tend to be less linear at high frequencies.  We have found cardioid mikes the best compromise.