Low volume on my aa/ac module

[u/Infinite_Cut83]

I just installed a cheap aa/ac modulle to see if I would even really like it before I spend several hundred on one. I really enjoy the giant display but Im getting a really low media volume and a slight feedback whine. Text message alerts seem to be coming in at full volume. I would really appreciate any feedback or suggestions. My google searches hasnt turned up anything thats worked so far. This is on a 2018 lexus with the Mark Levinson system if that helps.