wow. Thanks a lot for your explanation. I didn't know this issue about mics and harmonics.
As I think, (I supose) if you use an effects processor as I do, and you record the sound internally via PC or similar at home, the only way to get this particular sound is using the wah effect because you don't use neither real mics nor real amplifiers...
Anyway, the idea of both guitar tracks panned is very interesting. The effect given is like some kind of chorus, isn't?
Thanks a lot again for your very, very interesting comments.
Anyway, I get this sound using an "Eleven Rack". I'm very happy with this stuff, it really made you able to emulate classic guitar sounds. Now, I'm working on a Brothers In Arms sound. This wil be my next funny Project