I think compression has ruined all of our conceptions about how recorded music should sound in general. The actual aim of compression now is solely to maximise the potential volume of a track to make it really loud. What I find far more useful for classical guitar is to just manually go through the track and reduce any nasty spikes and perhaps raise anything that didn't quite come out loud enough but it takes sone careful listening but then you are in control and not the software. As mentioned above, eq should be mimimal.
Classical guitar teacher