User blog comment:B214/High School DxD EX/@comment-50.139.232.230-20151108030319

Confirmed: Ix's Boosted Gear ability is pretty much like his father, able to use [Boost] and [Explosion], but Ix played with it by using his PoD instead of regular aura boost (no wonder he cannot give boost to his siblings for the moment). The Durandal IV seems to be capable of using different style, as Zen were able to load power-boosted bullets (basically armor-piercing bullets to increase damage, as well as putting his own aura to them). Also, yes, the more advanced siblings are capable of using the dragon aura inherited from their father, albeit to amplify their own abilities instead of just copying Issei's techniques