With the WAZA Tube Amp Expander System Program Ver. 3.00 or later, it is now possible to use two types of mic (MIC A TYPE, MIC B TYPE) simultaneously.
Please make sure to update the WAZA Tube Amp Expander System Program, USB Driver, and WAZA Tube Amp Expander Editor to the latest versions.
Download page: https://www.boss.info/global/support/by_product/waza_tube_amp_expander/updates_drivers/
For detailed instructions on how to operate the editor, please refer to “Using the WAZA Tube Amp Expander Editor”.