Not 100% sure what happened. We were remodeling the living room. I had taken everything out. I thought I put the amp in a safe location, but apparently not. Don't know if something got kicked into it, if something fell on it, or if I did it uninstalling everything. There were no other posts damaged, the one that broke is broke clean. The remaining piece is not bent. I use banana plugs so I don't do any tightening on them.