Does anybody have any idea of the difference between the power cables that come with amps and other cables, for instance the ones used for computers? I just got my amp (GK 400RB) and the seller forgot to include the power cable, so I want to try to use the printer's power cable instead and was wondering if anything bad can happen? On GK it says that 120V/60Hz should be used (US) and the cable says its for 125V-250V with 10A. Any ideas? Thank you.