I've got active bass pickups and I notice that, with my Rockman Bass Ace, there's quite a lot of fuzz in my headphones. Well, a lot compared to my real amp at least. Is there a band-pass filter I can put in-line with my headphones , or even build straight into the box (I'm relatively electronically savvy)? Any other recomendations? EDIT : I only get fuzz with my headphones, it seems that when I plug my Bass Ace into my computger (via a Griffin iMic) it sounds almost totally clean...wierd.