Hello I am trying to record my GK MB112 amp into my Apogee ONE through my Mac. I am using the Direct XLR Out on the amp, into the XLR input on the breakout cable. I cannot get the ONE to register a signal. I contacted Apogee and they sent me a new breakout cable, but that did not help. Any suggestions on troubleshooting the amp or Apogee? I unfortunately do not have anything else with an XLR out to test. I purchased both the amp and the XLR cable brand new a couple months ago, and the Apogee about a year ago. Any suggestions? I am new to recording.