What characteristics have motivated your choice?
-USB Keyboard Controller Edirol by Roland
-5 Octaves
-The pads, knobs, sliders
The price-

UTILIZATION

- The touch keyboard is it fun? Should your use?
Touch is pretty horrible! True piano refrain. For me, it suits me.
This is the spring which is rather unpleasant. A by it the "plastic" is good and the velocity is there.

- The general configuration is it simple
Virtually nothing to do, connect the USB keyboard and hop (no need for power supply) ... The pads are still to be configured.

- Manuel entirely in English, but quite clear.

- Functions surprises:
The dual keyboard, it's nice!
The selector device is a pleasant surprise.
The aftertouch

- Damage ...
the pads are not velocity sensitive.

OVERALL OPINION

I have this keyboard for 48 hours, I am completely satisfied for the moment!
I have not tested on Linux ... Feedback to come.

-Conclusion
Damage to the affected and non-pads, velocity sensitive. A default by these little USB master keyboard that is of excellent quality.

Almost perfect at this price, you can go!