[RWP] audio interface software, are they useable for a blind?

[lui chee chau]

hello people, i am sorry for asking the wrong question at the wrong list 
maybe. but, i am not sure where else to ask for help. i want to ask if 
any one here have any eksperionce with
the accessability of the software for the following 3 audio interface.
1. Focusrite - Scarlett Studio.
2. Roland Quad Capture.
3. Steinberg UR44.
i am considering 1 or them, so any help is really apreciated. thanks in 
advance guys for any help.
chee Chau.