Just bought a zoom h2 and I'm really happy with the sound quality. My question is on the side of the unit it says "LINE IN" and "EXT MIC IN". So is it possible to direct input a guitar amp into the unit and record through there instead of solely using the internal mics? And if so, what kind of cable would I need. Would a 1/8 to 1/4 cable suffice? Any help would be great thanks a lot!