#1
So i posted this problem in guitar gear forum cause i thought my amp was giving me this bad feedback/hissing (vibrato or whatever u call it)

It only happened on certain note like fret buzz but if i play that note alone, it sound fine. But if i play note next to it and then hammer on the same note that sounded fine before then it will give back a very bad feedback.

watch this small clip to see what i am talking about:

http://www.mediafire.com/?jk2qzzmr04m

so what should i do? what am i dealing with here?
Bedroom Set up:

ESP LTD EC-400 with 81/60 EMG
Yamaha SJ550HR, 1980's Strat (rare guitar)
Crate v18
Digitech Bad Monkey
Vintage 30 Speaker
Metal Muff

Saving up for ESP Uruha's Signature Guitar
#2
i believe, and i could be wrong, that it has somethign to do with the soundwaves, thats probably doesnt help but hey atleast your guitar isnt broken
#3
Are you muting all the other strings properly. I'd guess you aren't, because it sounds like harmonic beating because another string is ringing along with it.
#4
all the string is muted properly.

no want what can cause this?
Bedroom Set up:

ESP LTD EC-400 with 81/60 EMG
Yamaha SJ550HR, 1980's Strat (rare guitar)
Crate v18
Digitech Bad Monkey
Vintage 30 Speaker
Metal Muff

Saving up for ESP Uruha's Signature Guitar
#5
Is it on your LTD?

Try to make that wobbly note ring out and then dampen the strings behind the bridge. My Cort (which also has a TOM bridge) has two notes where it has the right pitch to make the string vibrate behind the bridge (resonant frequencies and all that) and that sounds a little like what you're getting.