So I've tested it through GB, and I get nothing, even when I switch the GB output and input to the pod(just so you know I've had the POD set up as my global sound device and still gotten nothing through the monitors.) I got nothing. I've switched the XLR cables and experimented with the volume levels on the monitors themselves(all the way up; nothing. all the way down; still nothing.) The pod itself will work through my computers laptop speakers, it just sounds like shiiiit. I get nothing through the POD when I plug headphones in either. Both from my guitar, and when its setup as the global sound device for my comp.