Good question..
USB supports three data rates:
A Low Speed rate of up to 1.5 Mbit/s (187.5 kB/s) that is mostly used for Human Interface Devices (HID) such as keyboards, mice, and joysticks.
A Full Speed rate of up to 12 Mbit/s (1.5 MB/s). Full Speed was the fastest rate before the USB 2.0 specification and many devices fall back to Full Speed. Full Speed devices divide the USB bandwidth between them in a first-come first-served basis and it is not uncommon to run out of bandwidth with several isochronous devices. All USB Hubs support Full Speed.
A Hi-Speed rate of up to 480 Mbit/s (60 MB/s).
So...what you need there a USB 2.0 if then your all keyboard need ton of minute just for loading some Mb?
Just looking the T2, 1Gb RAM, need about 57 minute untill you are ready to play some..
PA800, PA-X and other same..
In this way USB 1.1 is enough too, because more speed in the embedded CPU you never can have.
AUDYA is the same, they use the DSP Dream chip and the all data loaded from the HD or USB, must pass trough the DSP chipset, that is really slow to loading data.
The Dream SAM9708 is the bigger DSP chipset that can drive MAX 256Mb of total soundbank:
http://www.atmel.com/dyn/products/product_card.asp?part_id=2589 Not really well understand how they can have more than 300Mb soundbank...they use maybe 2 of this device?
If yes, then the audya will have 128+128 voice, 256 Voice, but still there nobody know.
Let Ketron complete the OS and the definitive hardware and then we will know.
I was in the Musikmesse the demo too, AUDYA is really a nice keyboard!
Compliment Ketron for the big jump!