Sprout right channel headphone clicking/crackling

Have been a Spout owner since 2015. Recently the right channel of the headphone out has been clicking/crackling, not consistent but happens every couple minutes or so to the point of being annoying. Tested on multiple headphones. Switched to my coworkers Sprout with all the same cables and no crackling. Anyone else have this issue? Sent an email to support but haven’t heard back.