Onkyo Europe - Some of our receivers are equipped with the AccuEQ feature. But what is it exactly? AccuEQ Advance Room Acoustic Calibration uses a nine-point microphone measurement to calibrate and replace
New Denon Dm-a409 Instead Of Audyssey Acm1h Calibration Microphone For Onkyo Denon Marantz - Earphone Accessories - AliExpress