My Starfire started making a terrible broadband noise when plugged into the IN-2. Bypassing the IN-2 and using internal batteries has been fine. I opened up the bass, made sure everything was tight on the inside and then plugged into a DS-5R and all was good. Then, I yanked the IN-2 from the rack and brought it into my home studio and all was still good. Put it back into the rack, brought it to the gig and same problem.
One thing that's a bit odd about my IN-2 is that someone covered parts of the edge of the lids in masking tape. I'm wondering if maybe it might have some weird grounding issue or something triggered by being in a rack (pressure on the lids) and the masking tape stopped insulating. I know it sounds odd, but I can't think of anything else at this point. Anyone have a similar experience?
Meanwhile, my troubleshooting has been curtailed by being quarantined my room by COVID. Luckily, it's not severe.