I posted a similar question in the Casio message board but haven't had a response. I'm hoping maybe someone here can help. When I plug my Roland JV-1010 or Roland XP-50 or either of my guiters into my amp, I get almost no background noise. But when I plug my Casio WK1800 into the amp I get a certain amount of noise. Too much noise in fact and therefore always play the Casio through it's own speakers. This is leading me to sell the bad daddy. I like the keyboard and love to use it's rhythm patterns and even drive my sequencer by the Casio's clock... but not playing out of my amp is really bugging me. Is there any thing anyone knows about reducing the noise? Is it an amp or wattage or ohms thing that I can't do anything about?

Thanks.
Bob