freaky thing just happened. I wasn't sure about the alt outputs so I opened the case (with the instrument vertical, because it's so heavy and hard to handle) and checked the back panel. tested the headphones (which I couldn't swear on last night that I did) and it worked fine. now I've laid it out in playing position, tested it again and all is well (at least for right now). I don't think I trust it, yet. i'll take down the equally heavy m-audio keystation and test out the Kurzweil. thanks for your response since it made me try it one more time. something isn't quite right, but I know at least it could work.