Micro Alnico II by Gibson, as saying that it is particuliier, I much prefer the Classic 57 covered (with metal cover) rendering is too raw apple is not at all like the vintage model covered, I even asked if I had not done wrong mounting on my Les Paul sound so stank that is to say it all ... in fact, I mostly took to test the difference between with or without cache and all that it sounds hollow and aggressive he leaves nothing very smooth and creamy, it slams keudalle So forget between before and after I prefer so here before, completed test back to Classic 57 covered, except for those who are more into the vintage / modern and uninhibited ago Burstbuker two uncovered in the neck, which I think makes the best taff uncovered 57 to choose, take a much more modern touch ...