Currently Being ModeratedApr 23, 2012 2:41 AM (in response to ilgaar)
It turns out that a microphone can't be plugged into the Line in, directly, it has to be powered up first, with a pre amp. One good way to do this is to purchase an external sound card. I have purchased a TASCAM US-122MK, although it has a line out, I usually don't need to connect it to Line in jack of my MacBook Pro. The USB connection is doing a fine job, besides using the Line in jack in your MacBook Pro is not a good idea, you might fry your delicate internal sound card.