I don't agree at all.....no thin sound at all.
I also have a yamaha psr9000 pro..and I like it very much...
The kn7000 and the 9000 pro stand next to each other.
They are both very very good...

You have a Yamaha mind.....this is nothing bad ..not at all.....
I love my kn7000......I like it a lot...

technics kn7000 klinkt niet dun....wel dik...haha..
But everyone has his own taste....so don't let us start saying.....I like this better than this...etc;.