yeah I actually looked on his site, I didn't notice the driver included as well for each single cob... if they just plug & play then maybe I'll try get one, sadly though i could only afford one...i just get much bigger footprint with the meizhi for pretty much same cost as a single autocob, but meizhi like 4-5 times the power output, around 290w and 30x30 footprint at least, so almost double the footprint....Meizhi are blue spectrum heavy, somewhere around 180w on veg 290w veg/bloom... any reviews ya see on them are very decent reviews... I told ya I think mine kicks ass, even setting 32inches above canopy!! I'm just trying figure out dollar for dollar which will work best for me.. I already know how well the Meizhi performs the cobs I don't know..it's just 100+$ for 55w seems high, like 2$ a watt...the 600w Meizhi I can get 130$ including shipping...so that's like .45cents per watt..