Jose is getting a buzzing interference in his USB mic. Leo says that's usually noise created by the USB cable. So try a different cable. Leo also says a cheaper microphone may also be the culprit, depending on how cheap the mic is. Leo uses a Heil PR40 with a SoundDesign USB Pre2. But the FocusRite Scarlet also works with an XLR mic. Leo also says the SHURE SM58 is an affordable mic that gives more bang for the buck. It all comes down to circuitry.