I hesitate to change it to false, because it may be that you can set up a volume separately in singleplayer, but I'd like someone to clarify that. If there are more audio options in singleplayer - it would be nice to point that out in notes - if there aren't, then Separate volume controls would be false, since - according to documentation - at least 2 sliders are required for it to be true. Either way - that's why I put Citation needed tag.
Topic on Talk:Call of Duty: Ghosts
SP has only one slider
Yeah. Someone corrected that already.