I'm looking into getting a crest CA9 to run two aguilar GS212s (4ohms 600 watts). On the Crest website it says that speakon connectors are not available in north america. I was wondering if anyone knows if the speakon version runs on 220 volts so I'd have to rig up a transformer to plug into OR can I (or a trained professional) swap the five way binding post out for speakons without voiding the warranty.