Leaderboard

Just an update. I went to a local store and bought myself a Roland UM-One mk2 . The cable cost me 39 euro and when connecting it like described above i get no noise. A very good midi clock to the midiphy from Ableton and Bitwig . Updating with Mios Studio works. Bad thing is that it requires drivers but hey for now a driver is better then noise :) Probably and midi interface would have done what i now describe but just for the info :) Cheers Guys, i am happy again. Goodbye to ground noise and hello to white noise :)

Hi Niels, The power situation is fairly complex and there could be more than one source of noise. Some setups have no issues, some do. With MIDI obviously we have optoisolation so things are different there. The power distribution in the SEQ could be better e.g. by improving the return current path (certain Molex connectors on the lemec boards/USB PCB are meant for this). I think that the LED matrices introduce some digital noise as they switch. I'm not sure if this the source of your noise or whether it is the more commonly observed phenomenon encountered when connecting USB