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STR-DN1080 | Help Guide | 3. Connecting the calibration microphone
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Sony ECM-AC2 Home Audio Calibration Microphone Tested | eBay
GENUINE SONY ECM-AV2 Calibration Microphone | eBay
Sony ECM-AC2 Home Audio Calibration Microphone Tested | eBay
Amazon.com: New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary : Electronics