Amazon.com: Official Audyssey Replacement Microphone for calibrating Denon, Marantz, Onkyo, Integra, Teac, Tascam AVRs
Replacement for Onkyo Receiver calibration mic? : r/BudgetAudiophile
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OEM Onkyo Calibration Setup Microphone Originally Shipped With TX-RZ82 – Parts-Distribution.com
Amazon.com: Official Audyssey Replacement Microphone for calibrating Denon, Marantz, Onkyo, Integra, Teac, Tascam AVRs
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Old Onkyo 'hockey puck' AV receiver setup mic needed... | Overclockers UK Forums
Onkyo receiver - STEREO CALIBRATION MICROPHONE - for room EQ [0115170221] - $7.00 : EdsGoodStuff, it's all good