Up for sale is a Rowland M. K sash 10 rack analog piano module. The unit is tested and almost entirely working. There are a couple flaws, it was missing the power button, and I couldn't find an exact replacement. So as you can see in the picture, I found something that was similar but not perfect. And lastly, the chorus and flanger effects work as normal, however the indicators do not light up, but you can clearly hear the effect working as normal. But other than those things, the unit definitely has some cosmetic Wear and tear but is fully functional and sounds great. I did take the time to clean out all the original sliders and knobs.