You need an adapter to fit the push connectors on the back of the amp. Make sure they don't touch each other, maybe some black tape over them.
http://www.ebay.com/itm/4Pcs-Speaker-Cable-Pin-Connectors-Banana-Plugs-Spade-Banana-To-Pin-Adapter-/331180215104?pt=LH_DefaultDomain_0&hash=item4d1be10b40
http://www.ebay.com/itm/4Pcs-Speaker-Cable-Pin-Connectors-Banana-Plugs-Spade-Banana-To-Pin-Adapter-/331180215104?pt=LH_DefaultDomain_0&hash=item4d1be10b40