Joining the already scorching first lineup is Tiki Taane, poised to deliver one of his killer live sets.
Offering a dose of soul will be Hollie Smith, and Glasgow sound system Mungo's Hi Fi will bring the best in dancehall reggae vibes.
US rapper Ace Cosgrove and Sydney's Lime Cordiale join Wellington's Iva Lamkum on the bill, while local legends Cornerstone Roots and Raiza Biza make a welcome Soundsplash return.
A selection of top DJ talent is headed by George FM's Aroha, Jay Bulletproof and Cian, with RudeKat, Sgt Benji, Jungle Fari, DJ Atmosphere and B Rex also on hand to lay down the quality tunes.
And rounding out the lineup is a cast of Aotearoa's finest, including Sunshine Sound System, Hipstamatics, AceTones, K+Lab, ManaLion, Brown Brothers, Flowidus, Jafa Mafia, Mighty Mighty and Sister Nesk and MC Rafiki and Bobo.