I'm getting a vague crackling sound coming thru the 12T cab. Not sure if it is the amp or cab. It's not really that bad...kinda subtle but a bit annoying. I don't hear it when I plug my bass into my practice amp and switching cables does not seem to make a difference. I don't recall ever hearing it thru my monitors when I go direct in to my 8 track recorder. It's not constant, but rather random. Much of the time the rig sounds clean, but I do hear that crackling come thru now and then. Just wondering if there's anything I could do to clean it up or troubleshoot? Again, it's a minor issue.