reefkoi imports their own versions from china -
http://www.evolutionledlight.com/. Warranty is completed out of the States.
reeffiltration -
http://www.shop.reeffiltration.com/c...1?categoryId=5 - also sells similar speced units but they are higher output. Hes moved away from 1w LEDs and is now using 2w bridgelux. They are a better design but can not be dimmed either.