There are some ways to use them. I found when transferring old cassettes to CD running them through the BBS helped. We also used them on AVOs when we wanted the music track to stay up in level. It seemed to punch the voice so you could still understand what was being said. If (God forbid) you are using a really old amp and mixer for live club sound, inserting the BBE helps make the pres sound a little better. These are not really fixes but just ways you might find to use the BBE. In today's world of quality software, pres and interfaces, it just isn't needed at all.
Rod Norman
Engineer