So if i am within 4 feet of my carvin b800 it starts to hum really badly. I have tried this with my ric and my cort (has humbuckers), and still there is hum. I have tried this in different homes and the same thing. The head is under warranty for a year, but i am wondering if this is something that is something i need to live with or if i should send it back for a new one. My eden wt-300 or my peaveys never did this. It sucks having to tweak with my EQ because it hums so bad.