DDJ-RB buzzing/beeping coming from the master output

When I plug in my speakers into the RCA in the back of my DDJ-RB, if you turn up the speakers loud enough you can hear a buzzing noise along with a beeping noise if the play/cue buttons are flashing. It is even more noticeable if I plug the output into my computer's mic input to stream on Twitch (you usually can't hear it when the music is playing, but when there is no music or when the music gets quiet you can notice it). Is there anyway to fix this or is my unit defective?

I can't provide an audio sample right now, but the buzzing/beeping can sometimes be heard in my streams - http://twitch.tv/pikawubz