For some reason my Aphex PF and Sansamp BDDI aren't too fond of each other and when they're both engaged I get a pretty bad hiss. I keep the PFs compression set at 3-4.5 and the output at around 6. The mix on the Sansamp is around 12:00-1:00. Then when I use my Jazz bass the noise gets a lot worse. When there's no signal running to the pedals, there's very little noise, but as soon as I plug any bass in, the noise starts at some level. I'm wondering if the EH Hum Debugger (or something along those lines) would help me out any, or if I'm just stuck with this noise. My rig is a Signal Flex adapter running - BOSS tuner, Rehoused Russian Big Muff, Dunlop 105Q Wah, Aphex PF and a Sansamp BDDI.