Untested 

Yamaha YPAO R.S.C. Multi-Point Calibration Microphone YPAO R.S.C. (Reflected Sound Control) sound optimization calibration microphone with multi-point/speaker angle measurement.

Shipped With YAMAHA ADVENTAGE Receiver Models RX-A2020, RX-A2030, RX-A3020, RX-A3030, MT-7499