Synk: Parallel Line was the second worldwide concert tour by South Korean girl group Aespa, in support of their first studio album Armageddon (2024). The tour began on June 29, 2024, at Jamsil Indoor Stadium, and concluded on March 16, 2025, at KSPO Dome in Seoul, South Korea. The tour consists of 43 concerts around Asia, Oceania, North America and Europe.