Quick answer
Get the Sonic Resonator first, then scan Feedback Resonator fragments in the deep Alien Ruins / Metal Farms route and craft the upgrade at a Modification Station. Current public data points to Sonic Resonator x1, Enameled Glass x2, Conduit Crystal x2, and Strontium x2. The P8 footage reinforces the route logic: this is a deep alien-device chain, so bring Tadpole depth, repair, healing, power, and a marked exit before chasing range upgrades.
Where this route sits
P8 / Feedback Resonator device
Deep alien-device route
- Coordinate status
- Coordinate pending
- Device route marker; use the article before farming nearby items.
- Bring before leaving
- Deeper vehicle prep, artifact clues, and oxygen caution.
Coordinate record
- Video timecode
- 10:20
- Measured coordinate
- Pending alien-device coordinate
- Depth
- Pending
- Entrance cue
- Use artifact clues and the deep-device frame together.
- Safe return
- Reset at the nearest vehicle-safe pocket before farming nearby.
Route sub-points
1Deep device
This should become the primary Feedback Resonator coordinate.
Pending measured coordinate
Open this sub-point on map
2Bloom cavern handoff
Use this to connect P8 into Bloom Biofilm work.
Pending measured coordinate
Open this sub-point on map
3Route handoff frame
Treat as a safe route-memory frame, not a farm point yet.
Pending measured coordinate
Open this sub-point on mapField notes for the deep device route
This is not a casual tool pickup
Distance, depth, and exit clarity matter more than the fragment count. If Tadpole depth, repairs, or healing are not ready, the scan can turn into a rescue trip.
Do not fake the material chain
Enameled Glass, Conduit Crystal, and Strontium are expensive enough to stage before the scan run if you want to build the upgrade in the same session.
Build it for the Bloom chain
The useful destination is not random mining. Feedback Resonator range pays off when Bloom Cankers and alien-site objectives start punishing close approaches.
Video stills for the P8 Resonator route
These P8 Bilibili frames show the route context behind the upgrade: deep alien devices, Bloom caverns, and objective handoffs where range and return planning matter.
The route starts as a deep-device investigation
Around 10:20, the P8 route is already near 414 m with alien structures, hostile water, and tool prompts. Treat the Resonator chain as a deep route, not a quick pickup.
Source: Bilibili P8 route frame, around 10:20
Bloom areas explain why range matters
Around 24:45, the route moves through a purple Bloom cavern. This is the kind of space where a ranged Sonic upgrade is safer than forcing close contact.
Source: Bilibili P8 route frame, around 24:45
Read the handoff before leaving the site
Around 30:10, the route gives another story and objective handoff near an alien structure. Leave only after you have the clue, a marked return, and enough power for the next leg.
Source: Bilibili P8 route frame, around 30:10Visual notes and source media
Original route art
Abyss Guides uses original chibi deep-sea art for page visuals instead of copying wiki screenshots or fan uploads.
Source: Abyss Guides original artwork
Official Subnautica 2 gameplay trailer
Use the trailer for mood, vehicles, and biome context. Do not treat trailer scenes as exact farming coordinates.
Source: Official Subnautica YouTube embedFeedback Resonator route plan
Start with the Sonic Resonator
Feedback Resonator modifies the Sonic Resonator. If the base tool is not built yet, this route is premature. Use Sonic Resonator prep for ore, Bloom Biofilm, and Conduit Crystal planning before you spend time hunting the upgrade.
Treat the scan as a deep route
PC Gamer places Feedback Resonator fragments around the glowing green abyssal pool / Metal Farms route northeast of the Alien Ruins Research Base. The P8 footage matches the feel of that chain: deep water, alien structures, limited visibility, and repeated handoffs.
Scan, mark, and leave cleanly
Subnautica 2 Guide lists Feedback Resonator as a blueprint unlocked through fragment scanning. Once the blueprint is handled, do not keep wandering just because the route is visually interesting.
Craft it at the Modification Station
Current public data lists Sonic Resonator x1, Enameled Glass x2, Conduit Crystal x2, and Strontium x2. If the Modification Station is not unlocked yet, solve that support chain before returning to deep errands.
Use range on Bloom hazards
The P8 Bloom cavern frames show why range matters: tight purple routes and hazardous growths punish close contact. Back up, fire from safer distance, and keep oxygen and vehicle return in mind.
Connect it to Axum Vision
Feedback Resonator should feed the next alien-site chain: Bloom Canker clearing, Angel Comb, Axum Vision, and Karakorum Power Plant objectives. Build it when you are ready to use it, not just to fill the PDA.
Route card
Tool
Sonic
Base tool first, ranged upgrade second.
Route
Alien
Deep-device and Bloom routes need return planning.
Use
Range
Clear Bloom hazards without forcing close contact.
Before you leave base
| Check | Why it matters |
|---|---|
| Sonic Resonator | Required as the base tool and still useful for mining and prep routes. |
| Tadpole Depth Module | The route belongs to deeper alien-site progression, not shallow scouting. |
| Repair Tool and healing | Deep scans become expensive when one bad attack blocks the return. |
| Fragment scans | Unlock the blueprint before expensive crafting materials matter. |
| Enameled Glass x2 | Pulls in glass and Creature Enamel planning. |
| Conduit Crystal x2 | Tied to deeper Alien Ruins and power-route material planning. |
| Strontium x2 | Tied to Celestine and processed material prep. |
| Modification Station | Needed for the tool upgrade craft. |
This is a late-route tool, not a flex item
The scan route sits near hostile water, deep structures, Bloom caverns, and Conduit Crystal temptation. Pick one main job before leaving base. If the blueprint unlocks, go home and build the upgrade instead of turning the return trip into a sightseeing tour.
FAQ
How do you unlock the Feedback Resonator in Subnautica 2?
Scan Feedback Resonator fragments, then craft the upgrade at a Modification Station. Current guides point to deeper Alien Ruins, green abyssal pool, and Metal Farms-style routes.
Do I need the Sonic Resonator first?
Yes. Feedback Resonator is a modification of the Sonic Resonator, and the Sonic tool also helps with material prep around the route.
What is the Feedback Resonator recipe?
Current public data lists Sonic Resonator x1, Enameled Glass x2, Conduit Crystal x2, and Strontium x2 at the Modification Station.
What does the P8 video add to this guide?
It shows the upgrade route as an alien-device chain with deep water, Bloom caverns, and route handoffs, which explains why depth, power, and return planning matter before the craft.
Why do you need it for Axum Vision?
Later Angel Comb and Axum Vision routes involve Bloom Cankers and alien-site objectives where ranged clearing is safer than close swimming.