It has definitely nothing to do with speakers, or speaker cables/connections as I hear it in headphones.

It sounds like, for a millisecond, there is a glitch in the sound - ultra high-pitch click/glitch. Then everything is fine. On the ClubRiddm, as long you the keyboard is playing a chord (say Am7) and you have all channels turned on, it happens as soon as 2nd bar in the B variation. It happens EVRERY time making me suspect something is corrupt with the memory? I hope that this can be resolved as I absolutely LOVE the board otherwise. I think I only hear these "artifacts" when using audio styles. I don't think it has ever happened to me in "regular" styles.

If I could upload the wav file somewhere, I could let you all listen and judge for yourself as I captured this now.