hey, i have a question for y'all. have any of you used this contact microphone before? it's the korg CM-100L and it's only $10, so i'm trying to figure out what the catch is. everywhere i look on the internet, it says great for using to plug into a tuner, but i'm looking to use it as an actual contact mic. do you think it'd work or is this literally just a microphone for a tuner?