Sorry you must have a slow or old puter site works great for everyone I sent.Anywyas Im curious Ive never heard of such a ballast asked my 2 buddies who own hyrdoshops and they hadnt either.Got a link so I can see what this thing is? Another question is why would you want one??If you want both spectrums youd get an enhanced spectrum bulb that has balanced light wave spectrums and if you want it for a veg room and a flower room why hassle with it when you can get 2 seperate ballast and hoods so cheap which would save energy, costs, space, hassle and time? Also if its 600 watt ballast running 2 lights it is either only giving 300 watts to each bulb which is huge isse or 1200 watt total which would be torture on a single ballast in dual mode.