History of Spark of Amplitude

Spark of Amplitude is an Arc 3.0 Fragment. While Amplified, rapidly defeating targets creates an Orb of Power. It pairs well with Arc weapon builds and Orb of Power mods.

Unlocking

A 2022 guide says the four Arc 3.0 Fragments were locked until King's Fall was completed, while another source says speaking to Ikora Rey at The Tower unlocks them for a small Glimmer fee, with one listing 25,000 Glimmer per Fragment.