Topic: BF Pro intermittent static
I have a RME babyface pro. I love the interface but have a stubborn problem. When I have a guitar plugged into either input 3 or 4 everything works fine except for an intermittent hiss. The hiss is irregular but comes at about 2-3 minute intervals. It is constant for 6-15 seconds and then dissipates. I have tried an external power supply, different cables (guitar and USB), inputs 3 and 4, different USB ports, and different guitars. None of this made it any better. If playing music from the computer, this does not occur.
I am uncertain what else to do. Any suggestions appreciated.