Sorry I am just a beginner in home recording. I am using a SM57 connected to my cheapo mAudio sound card. Whenever I tried to record anything on my acoustic guitar, the result is extremely soft recording. I can only hear it by increasing the volume by 400%, which produced a lot of hissing. Is it the position of my mic? I've tried almost all placement, and the recording is still very soft even when my mic is like 1cm away from the soundhole or the 12th fret. Vocal sounds loud and clear with it. Does it matter if I connect the mic to the sound card's "mic" input or "line in" input? Any input would be very very helpful. Thank you very much.