Hi everyone, I'm very new to this issue, never had something like this before. I just got a 2008 Fender Deluxe Strat SSS with stock SCN pickups and I realized that sometimes, I hear a little ringing tone when I pick the higher 3 strings. Is this what people refer to as a microphonic pickup? I use a tube amp but I doubt it's the tubes, they are sort of new. JJ EL84s and Tungsol 12AX7s in a Budda Superdrive 18 II. Thanks a lot.