A very welcome BLAIR-generation upgrade to the Aputure 300 and 600 series! Like the 1200x, the 400x BLAIR-chipset delivers better color accuracy and higher brightness levels for the wattage than older Aputure models, as well as green-magenta adjustment (which the older 300x and 600x do not have). With that, it has a surprising amount of range for a “bicolor” light and is able to output saturated colors and gel-simulation effects (more than 70% of Rec. 2020 color gamut using Limited HSIC+ and x,y control modes).
Anecdotally, this unit can step in as a replacement for a generation 1 Aputure 600 series light in output, but with more flexibility, smaller footprint, and better rendition and ease of use. According to the photometric charts, it is brighter than the 600x and 600c across the board.