Ok I'll be the 1 who asks the stupid question. i've heard/read the term many times here but don't know what it means. so how do you do a pop test and what does it actually tell you if anything. does everyone agree that it is a useful test or do some think its a bit pointless. I have been given an otto link super tone master and love the sound of it but i squeak more than i did on my old mpc. will a pop test tell me if it needs to be refaced or do i just need to get used to it.