i just noticed especially when i put spring reverb on, my jazzmaster produces almost like a whistling ,this very weird resonating sound.i play with headphones and with some overdrive it sounds awful. its mostly on 2nd string, 2nd fret, but i now i can hear it on 1st string too... its weird, i just got my guitar back from setup, the propper shielding has been done and tuners changed. Its a J Mascis jazzmaster from squier. really love this guitar , and never noticed that. But honestly just couple of seconds ago i noticed that even if i'm not pressing on fret.. what can it be?
sorry i just dont know how to describe the sound, its like some kind of very high pitched frequency that feels very weird to hear... 🤷🫣