Phantom PHE750DS, 750W Digital Ballast, 120/240V Dimmable Hydro Farm. - $75 (Rogers)

The Phantom Digital 750W Electronic Dimmable Ballast is part of the most rigorously tested ballast line on the market.
Phantoms feature silent operation, lightweight design, and the maximum lumen output on the market.
The Phantom is also the only ballast on the market designed for vertical operation, for coolest running and optimum grow space.
We listened and learned from your input - now you can reap the benefits with this durable, premium digital ballast.