I'm running my bass through my effects setup(sansamp bass DI - Boss Bass Overdrive - Boss Bass Chorus - Boss Bass synth) and then to my Sansamp RBI. It makes a tonnnn of noise whenever I hit the Sansamp bass di. But it will stop whenever I turn the active button off, on the RBI. I have tried running this setup through the effects loop and the same thing happens. any ideas? The noise is a major hum.