Please note that this Tech. Tip applies to the Legacy 9000 Series products only.
This includes: A-9060DH/S, A-9120DH/S/DL, A-9240SH, M-9000.

When starting the 9000 software, after selecting the model and mode, select FILE/OPEN.  The following Windows dialog box will appear. By default, only the MATRIX file selection is visible. To see the MIXER files, select FILES OF TYPE drop down dialog and select A-9000 parameter file (mix).