Δείτε ένα ωραίο link (το έχω ξαναγράψει) όπου δοκιμάζουν διάφορα set μαγνητών.
http://www.acmeguitarworks.com/webpage.aspx?webpage_id=1
Από ότι διαβάζω κι αυτοί το ίδιο έκαναν:
Since every guitar is different, a set of pickups can sound different in one guitar than they do in another, so we had the idea that if we recorded a bunch of pickups in the same guitar, using the same amp, same settings, same player, this would provide a level playing field, where the differences you hear in the sound clips would be the differences in the pickups themselves.