[i'm a musician with a bit of a physics background, and lots of math]

i recently got a nice 5.25 frontend 7-band eq that i intend to use for recording. it dawned on me as i'm listening to some static right now [from it's output through my headphones] that, even if it was through my original speakers, i still get a hum or some static. i used to use [or not use, actually] another poor-mans front-end that picked up a lot because it wasn't grounded correctly or something [i decided to just get the real stuff and not have to bother with trying to make my own eq, that'd be really messy in the confines of a 5.25 drive bay, and expensive]... anyways, you get this hum even from your sound-card's output, and it is really bothersome... is there anything i can do to fix this? [i'm guessing if i buy a really expensive audigy-class sound card that'll do the trick... or maybe some new speakers or headphones with a higher tolerance] also, if i want to use the output from my amp, is setting the intensity to 1 going to give me a one to one ratio in signal intensity? [it has distortion, and i have another amp with reverb that i'd want to use. and i could bother to buy a pedal, but i'm still thinking...] thanks for all your input i appreciate it.