This morning I noticed a whining background noise coming from the LXR. I'm using a new mixer with powerful preamps, so that's perhaps why I haven't noticed it before. The noise is loudest on the first output.
I recorded the amplified signal, once with the lxr playing a muted pattern, once playing an empty pattern.
As you can hear, there's definitely some kind of modulation from the sequencer going on. Even on the empty pattern there's a very audible click bleeding into the signal.
I've tried using different power outlets and power supplies but the noise remains. What is causing this? Could it be the trigger board?