I noticed this as well when my Rytm first showed up. When I first got it, I couldn’t listen to it with my studio monitors, so I was using headphones only. The headphones output was very noisy with the volume above the half way point. I was concerned about it, but once I hooked it up to my mixer the normal outputs didn’t have the same issue. I figured that Elektron will hopefully update this in future updates. For now I just don’t use the headphones output directly from the Rytm itself. Instead, It is always connected to my mixer that has monitor out and it’s own headphone out for when I can’t listen with the studio monitors…