I think you should get yourself a Shure SM 58 and plug that into your audio box and see what you get. You have too amplifications stages feeding other amplifications stages and with that, you've got plenty of noise. So plug a dynamic mic directly into the Audio Box and try again. This is something I do regularly and there is no noise problems with the Audio Box with a SM 58. Your headphones are up too high... I said... YOUR HEADPHONES ARE UP TOO HIGH! There is HISS to be heard in any audio electronics when not adjusted properly. It's OK, these are typical beginner mistakes you are making. You'll get the hang of this soon... I hope?
I'm hanging and I'm hissing. I must be a snake in a tree?
Mx. Remy Ann David