I wouldn't want them (Yamaha) to change a thing about the external power supply...I like it...it makes the keyboard lighter.

In my opinion, a "home keyboard" becomes a "pro keyboard" the moment it is used by a pro.

My early production PSR-3000 is 3 years old, played much more than if used by an average "home" user, and has given no problems regarding the power supply or connectors.

The Tyros2 connector is more robust because the power supply is built in.

Ian