I thought I'd just let you know of this, it's a really great plugin, and one I use on nearly all of my mixes, it's called bx_stereomaker
It converts a mono signal to stereo, doesn't sound much but I can't recommend it highly enough especially for things like acoustic gtrs and mono pianos, sometimes BVox.
You can say how wide you want the stereo width to be. (I also have the Waves S1 - along with Magix Stereo enhancer, this thing is very different)
The unique thing with this is that it doesn't add any phasing, and it's really easy to use, it'll add width and dimension to a flat recording easy as pie.
This is in my top 5 plugins..must stop gushing....