Neutrik NA4LJX 1/4-Inch Neutrik SpeakON Adapter
This clever adapter lets you connect to any power amp or speaker cabinet that has a Speak on jack, without cutting off the ends of your 1/4 in. cables. Simply slip the 1/4 in. end onto your speaker cable and the Speak on end can be plugged into the amp or cabinet. This adapter can be used with equipment rated up to 20 Amperes.