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Tried plugging the LXR midi in and out to my audiobox presonus 22vsl and I have this constant high pitched hissing noise. If I disconnect the **midi out cable ** from the LXR the noise disperses. I also tried switching the cables around and the same thing happens so it does not seem to be the cables.
Currently I have the LXR (7.5v 1000ma PSU) inserted in its own wall socket. The audio interface is powered via usb from a surface book dock and I have TRS cables going from OUT1L and OUT1R to the audiointerface.