Machinedrum, Jimmy Edgar and Lee Scratch Perry have also been named for the NSW festival in December.
Headlining the three-day festival will be reggae legend Lee Scratch Perry, who performs alongside another of the genre's greats, Mad Professor. Other confirmed acts include Ben UFO, Machinedrum, Josh Wink, Jimmy Edgar, Alexkid, Peak & Swift and Sydneysider Dro Carey.
It'll be the eighth year that Subsonic takes over Riverwood Downs Mountain Valley Resort, located a few hours north of Sydney. The five-stage party runs from December 2nd through 4th, with dozens more names due to trickle out over the coming months.