I bought a Roland E80 to replace my kn7000 but it was just too complicated to program so I just play what programs are built in. It is the top of their line and was really costly. Mostly I play the Tyros 2 that I had to move into the living room to make room for the KN7000. After moving all the stuff around to make a home for the KN7, I have one left over bass woofer and don't remember what to hook it up too. Any ideas? Best to all, Bebop