The Hammond Pro XK Rig adds a 61-key lower manual to your XK-3 organ, and it"s designed with the hitting the stage musician in mind. Just place your XK-3 organ on top of your new lower manual - complete with waterfall keys and 12 reverse color presets - place it on top of your keyboard stand, and you"re set to go. There"s also a special folding aluminum stand available to put your complete Hammond Pro Xk Rig at the perfect height. When you want to take a complete double manual system out on the road, there"s no better way than the Hammond Pro XK Rig.