Subnautica 2 Feedback Resonator Scan Locations
Find the Feedback Resonator in Subnautica 2, understand why the Sonic Resonator upgrade matters, and plan the scan route before returning to Angel Comb or deep ruins objectives.
The Feedback Resonator is the upgrade players usually need after the basic Sonic Resonator stops being enough. If an objective is visible but too far away for the base tool, stop forcing the angle and plan the scan route first.

Quick Answer
Look for Feedback Resonator fragments during the mid-to-deep progression route, then craft the upgrade once the blueprint is unlocked. The upgrade turns the Sonic Resonator into a ranged tool, which matters for later Angel Comb and viral bloom interactions.
When To Chase It
Go after Feedback Resonator when you are blocked by targets that cannot be reached safely with the basic tool. If you are still gathering early oxygen, scanner, and base materials, finish those first.
Route Checklist
- Bring enough oxygen or vehicle range for a longer scan run.
- Keep a clear return landmark before following alien-ruins paths.
- Scan every fragment around the route before leaving the area.
- Recheck the recipe after the blueprint unlocks, because Early Access recipes can change.
What It Unlocks
The upgrade is most useful when a route asks for range instead of close contact. It pairs naturally with the Angel Comb guide, the Conduit Crystal guide, and the world map when you need to compare depth and route risk.
Early Access Note
Subnautica 2 is still changing. Treat fragment routes as current guidance, not permanent coordinates, and verify the crafting station and material list in your build before leaving base.