Could someone post a picture of there Audyssey mic? I do believe there is a difference between the maranta and onkyo mic.
Audyssey says so but than conflicts them selves later in the email response.
They use different microphones. Most all receivers made after 2009 were updated to have the same microphone (ACM1H and ACM1HB), receivers before that have many different types.
A replacement ACM1HB is available to order by e-mail for $15.99 plus shipping. For a shipping quote and order form let us know your full shipping address.
Onkyo support may also be able to help with replacement parts.
The onkyo was built in 2008????