Uncle Dave :
The Tyros has a 'normal' AC inlet. Don't be afraid you have to purchase a power supply
Trtjazz :
The whistle is the 'whistle' sound of the Tyros.
Larigot :
I personally see NO benefit of 'wall wart' supplies. I remember one of our friends searching a power-supply for his PSR740 (?) because it is not included..... they cost a fortune ! Connecting another (non yammie) PS can cause major damage to your instrument, what makes most owners dependent.
Changing an instrument's line-voltage can be realized with a switch (often used) or one or two (soldering) jumpers..... so no need to replace power-supplies. A piece of cake for a technician.
Scott :
I agree with you about the (useless ?) space. I expect Yamaha to present a Tyros PRO version within a few months, where they need some extra space for 'extra' keys (octaves) The same housing fits ! I like Ketron's idea/solution to position the pitch-& modulationwheels above the lowest octave.
The Tyros housing is NON metal.
The brackets that need to be mounted for the music rest look fragile and I expect them to cause trouble during transport in a bag !
I dislike the idea I have to purchase an expensive flightcase. :C
Scott....
....... I'm studying the Tyros manual for detailed information
right now.
Roel