Onkyo Audyssey Setup Microphone Originally Shipped With: HTR670, HT-R670, TXNR525, TX-NR525, TXNR818, TX-NR818 This Is A True Onkyo Part! Item Is Brand New HTR670, HT-R670, TXNR525, TX-NR525 TXNR818, TX-NR818 OEM Onkyo