Great question
@1939bear. We have definitely looked into COB technology and the possibility of adding it to our light. I think the technology continues to get better & i've seen a lot of great grows using the technology.
I actually have a bit of experience testing COB LED's in the past. Great output with a very full spectrum. Here is the spectrum test I did in a past life on a new COB LED panel currently on the market:
While COB can grow plants, with all of the energy wasted in the green spectrum they aren’t necessarily the most efficient. White LEDs only produce 40% of usable light and the rest is wasted in power consumption and heat. I believe mixing LED diodes that target the nanometer (nm) ranges plants love, is the most effective and efficient way to grow plants. We feel that COB's can be effective if they are used sparingly as supplemental lighting within an LED panel or specifically for seedling and clone development.
But if we get enough demand, we may add them in the future. It's ultimately what our customers ask for.