You are welcome to download copies of the two AM profiles I usually run from the link below. Scroll down to the AM section. Both of those profiles utilize the embedded CFC Audio Tools
(capable of surpassing the performance of external audio software) in the DSP tab of OpenHPSDR and they will faithfully reproduce whatever source audio you feed into the ANAN. You can adjust the Post EQ to flatten out the audio and add some peaky 3K grit as well as add in some Valiant clipping by engaging the hard-limiting COMP button underneath the MIC button and advancing the slider. You can also narrow up the TX filter in the Transmit tab.
Note that my transmit profiles use the VAC input to transport my rack audio into the software. If you are using either the MIC input or the LINE input of your ANAN you will need to click on the VAC button in the GUI to disable it and then select either MIC or LINE in the Transmit tab depending on which path you are using at your station.
If you are not familiar with the procedure for importing Transmit Profiles there are directions right on the download page link below.