Hey guys, I'm a fairly new bass player and this my first post here. I picked up a new bass over the weekend, a Yamaha TRBX604FM, and last night had a rehearsal with my band with the new bass. I absolutely love the tone that I'm getting from the bass but I ran into an issue that I could not explain or resolve. Essentially, in active mode everything was working perfectly but when I put the bass into passive mode and activated either my fuzz or overdrive pedals I got a loud humming feedback noise regardless of whether I was playing or not. This only happened with the guitar's volume pot turned up (if it was all the way down there was no noise) and only when the pedals were active (when they were in bypass mode everything worked fine). For reference my setup was as follows. Guitar --> Polytune 3 tuner --> Bass Big Muff Pi (Effect out) --> Boss Odb-3 --> Amp Input 1 Also, I ran a second cable from Bass Big Muff Pi (Dry Out) --> Amp Input 2 Any advice or input is appreciated. Thanks!