It just matches amp tones, not effects. So the ideal tone to match to is a dry, single track guitar. A lot of the isolated tracks you find on Youtube and such are actually "stems" of doubled guitar tracks. EVH was pretty unique in that he usually only did one guitar track.
Once you have the tone match, you can add effects to taste to mimic the original if you desire. In the EVH example I just added a bunch of reverb.
Once you have the tone match, you can add effects to taste to mimic the original if you desire. In the EVH example I just added a bunch of reverb.