NITEHARTS is a music festival in San Diego presented by electronic music producers Knock2 and ISOxo. Launched in 2026, the festival marks a significant milestone for the duo, who transitioned from underground EDM favorites to mainstream headliners at major festivals including Coachella and EDC within less than two years. Knock2 and ISOxo met as teenagers in San Diego and began producing music together, developing a sound rooted in trap and bass house. The festival features performances from established and emerging electronic artists, with notable appearances from producers such as Skrillex and Zedd. NITEHARTS takes place in the artists' hometown, reflecting their connection to San Diego's electronic music community.