Quick answer
Make the Sonic Resonator first, then scan two Feedback Resonator fragments on the green-pool / Metal Farms route northeast of the Alien Ruins Research Base. Craft it at a Modification Station with Sonic Resonator x1, Enameled Glass x2, Conduit Crystal x2, and Strontium x2. The upgrade is the ranged answer for Bloom Cankers on the Axum Vision route.
Feedback Resonator route plan
Make Sonic Resonator first
The upgrade depends on the base tool. Use Sonic Resonator for large ore, Bloom Biofilm, and material prep before deep routes.
Wait for vehicle depth
This is safer after Tadpole depth planning, repair prep, and Alien Ruins orientation.
Scan two fragments
Current reports point players toward the green pool and Metal Farms side of the Alien Ruins route, around late-depth Tadpole travel.
Craft at Modification Station
Prepare Sonic Resonator x1, Enameled Glass x2, Conduit Crystal x2, and Strontium x2 so the upgrade does not stall in storage.
Use it for Axum Vision
The later Angel Comb asks you to clear Bloom Cankers at range. This is where the upgrade earns its keep.
Use distance
Back away from hostile growths and use the projectile instead of forcing a close swim.
Route card
Tool
Sonic first
Upgrade the tool after it earns its place.
Route
Ruins pools
Plan the return before diving deeper.
Use
Ranged clear
Distance is the whole point.
Pre-dive checks
| Check | Why it matters |
|---|---|
| Sonic Resonator | Required as the base tool and still useful for materials. |
| Tadpole Depth Module | The route reaches uncomfortable depth. |
| Repairs and healing | The scan area can punish sloppy exits. |
| Modification Station | Needed to craft the tool modification. |
| 2 Enameled Glass | Part of the current Modification Station recipe. |
| 2 Conduit Crystal | Deep-route ingredient near Alien Ruins planning. |
| 2 Strontium | Processed material tied to Celestine planning. |
| Conduit Crystal plan | Worth gathering while you are already near Alien Ruins. |
Do not turn one route into five chores
Scan fragments, gather Conduit Crystal, or scout Metal Farms. Pick the main job before leaving base, then come home alive.
FAQ
How do you unlock Feedback Resonator?
Scan two upgrade fragments and craft the modification at a Modification Station.
Do you need Sonic Resonator?
Yes. Feedback Resonator modifies that tool.
Where is the route?
Current guides point to the Alien Ruins, green pools, and Metal Farms route.
What is it for?
It gives Sonic Resonator a ranged projectile for safer clearing.
Why does Axum Vision need it?
The later Angel Comb route uses Bloom Cankers that are safer to clear from range.