AMC8877-2.5DB AMC8877-2.5DBT AMC8877-2.5DBTF AMC8877-2.85DB AMC8877-2.85DBT AMC8877-2.8DBTF AMC8877-3.0DBT AMC8877-3.0DBTF AMC8877-3.3DB AMC8877-3.3DBT