http://www.faderfox.de/mark/index.ph...178&Itemid=245
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those are encoders according to the text (also the circle around them goes all the way around and the labels are for functions you'd put on an encoder), the only strange thing is that they put a marker on them like on regual pots....might be more confusing than helping
I like this. Personally I'd want to take it apart and put into my own aluminum box. But otherwise they got the right controls located where they should be.