Note that the higher price of the QB-130 vs the 2 x QB-75 is because of the ELG/XLG driver.
We've gone back to "V1" (LM561C S6) LEDs, because they have the same IV curve for 3000K and 4000K. An equivalent light using "V2" (LM301B) LEDs would have a brighter 3000K than 4000K.
We've increased the LED count to 144 per panel, so this light is equivalent to a QB288-V1, a kit of which retails for $185 (R2800+). Approximately 2.5uMol/J efficacy.
Two channels, 3000K and 4000K, for a 3500K spectrum. Simple, straightforward grow light for a small area. Let's say, 75x75cm. Full cycle 3500K.
Using a dimmable ELG or XLG driver, depending on what we have in stock, the light outputs 130W. Passively cooled.
Ratchets sold separately.
Note that sold product may change slightly in appearance, such as back to the QBv2 style.