Item: Behringer ECM8000 Measurement Condenser Mic
Location: ACT Canberra
Price: $50 plus shipping
Item Condition: As new 
Reason for selling: Not used
Payment Method: Pickup - Cash, Direct transfer
Extra Info:The ECM8000's ruler-flat frequency response from 15 Hz to 20 kHz and omnidirectional polar pattern give you a clear, accurate reading of any room's unique sound characteristics. Like standard condenser mics used for recording or performance, the ECM8000 is phantom powered, from +15 V to +48 V. We've even included a rugged carrying case, microphone clip and stand adapter to ensure smooth operation every time.

https://www.music-group.com/Categories/Behringer/Microphones/Condenser-Microphones/ECM8000/p/P0118

 
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Does this one have a callibration file?

Nope - it is not a calibrated mic but it worked better than a calibrated Bheringer that I also had. It is very close to Audix TM-1 that I use now and that is a $500 unit. The difference is really only beyond 16KHz when Bheringer starts rolling off a bit while Audix pushes beyond 25KHz. 

I have one and calibration files available for certain progs, Good luck!