#1
I just got myself an AT112 at a ridiculously cheap price, and the thing sounds amazing. The only problem I've encountered so far is that whenever I play the 3rd fret on the low E string, something rattles from inside the amp like it's resonating with the note. I can't exactly pinpoint where it's coming from, but it sounds like it's somewhere around the amp itself and not the speaker or reverb tank.

Any idea what it could be?
#2
YES!

OH MY GOD!

i have the same exact problem on the same exact string and i cant figure out what the **** it is.

for me, its only on the clean channel though......so, no big deal
#4
thats not it.

its something inside.

its hard to explain but i know that its not a screw problem.
#5
have you made sure though? if screws are loose then something else in turn could be loose making a rattle. i mean what have you got to lose anyways maybe 5 minutes of your time... if not i duno maybe its the speaker that it comes stock with and not liking the frequency. no idea man.