Free Download Soundevice Digital SubBass Doctor 808 v2.9 | 35 MB
Treating the lowest frequencies is not an easy task. And in some listening environments, it is almost impossible. If you mix while travelling or your mixing room or your system is not 110% perfect, you should see the doctor. Namely SubBass Doctor 808.

https://unitedplugins.com/SubBassDoctor808/