Can someone determine if that's a microphone and tell me the model or brand?


  • It's a Yamaha, that's all I could say. Never seen one before.
    – Tetsujin
    Commented Jan 16, 2016 at 8:00

1 Answer 1


That is a Yamaha YPAO Calibration Microphone:

Yamaha YPAO Calibration Microphone

It is used to calibrate amplifier/speaker systems in relation to the room you place it in.

YPAO stands for "Yamaha Parametric Acoustic Optimiser" and here is a video about the process (in which the microphone is used):

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