Listen to contemporary music, the bass dominates. Most sound systems have a sub-woofer -- the main reason to emphasize the bass. When I moved to Yamaha the first thing I had to work on was the bass sound it was right up front, I do not want that with Big Band music. (30’s and 40’s music)

When I had the KN7000 I added a small sub-woofer below the keyboard and the sound was complete to my ears.

John C.