Neutrik has made a design improvement to part number: NADB*MF*, which affects products NADB9MF, NADB9MF-B, NADB15MF and NADB15MF-B. They have changed the dimension of the D flange to improve ground contact by adding copper film. Neutrik will continue to ship current product until depletion of stock, but the new products will be identified with a G44 date code.