Ground loop issues with Audio 4 DJ

exocet

After connecting my turntables and mixer up to my Audio 4 DJ interface I'm getting really unbearable ground loop noise.

When my mixer's channels are switched to phono (i.e. to play normal vinyl) there is really loud ground noise. There's no noise when I flip the switch to Line. I get the same amount of noise whether I connect the grounding wire to the mixer or the interface. The same is happening for both mixer channels. I'm using the original cables that came with the interface.

The turntables and mixer have no grounding issues when the interface isn't connected.

Anyone have any ideas how I can fix this?

Mark_NI

Hi @exocet, have you seen the following article in the Knowledge Base?

How to Resolve Ground Loop Issues (Hum or Buzzing Noises)

Do the steps help?