Thanks to all the replies it has been helpful to learn a bit. But that being said, I should have not rushed and tell everyone my problem with the guitar and thinking it was the DI box. I guess I was a little frustrated not knowing what it was at once. Plus everyone in the band including me are amateurs and we couldn't tell right away or guess the problem. At the end the problem was solved. I decided to try a new cord (guitar cable) ! I don't know why I didn't try this at first. I blamed it on an old di box. Well the cord also was a bit old too. Everything sounded good today. Well at least I am hoping no noise will comes back.
