i have an Esp ltd deluxe , it has two emg 81 active pickups. when i got the guitar it had 10s guaged strings. and the treble tones were pretty high , i use just a vamp2 and a small fender bullet amp (i guess its quite old amp, used bought) i turn all its eq setting to zero and use vamp2 to create sound; i lowered the treble and bass to zero (i don't need it to heavy so bass is much better at zero), less then half mids level and lesten the presence pretty much as well and gain a little more than half level but still got treble. But now recently i changed the strings with 11s and on the vamp settings trebble and bass is zero a little bit mids level and presenece is more than half level. i get a pretty good sound now but one big problem is the pick noise it picks is too much for me , when the gain is maximum or even around half. so i ask whether active pickups can be replaced by any other type of pickup. we don't have any guitar techs available in our city; country i should say. so i'll probably do it my self if i have to change them.