The Feedback Resonator is an advanced modification for the Sonic Resonator that you’ll need to reach the endgame in Subnautica 2. It allows us to solve a puzzle that activates the fourth Angel Comb.
But first, we will need to find the blueprint fragments.
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Feedback Resonator blueprint locations in Subnautica 2
Before you reach the blueprint locations, you’ll need to upgrade your Tadpole with the Depth Module Mk. 1, or it will take damage, as the blueprint is located at almost 600m depth.
With that out of the way, head east from your lifepod. You’ll first reach the Alien Ruins, where the Research Outpost is. From there, head a few metres straight, and you’ll reach the Power Center. Dive down, and you’ll find the Angel Comb.
Go straight from the Angel Comb, and you’ll find a room with a pool full of toxic green liquid. Go a few metres forward, and look to your left. You’ll find the first fragment by a rock.
Next, return to your Tadpole and swim 50m upwards. Then head straight past the pool, and you’ll find a pink light glowing in the dark.
There’s a platform at the base of this light, with the second fragment on it. Scan the second fragment, and you’ll unlock the Feedback Resonator blueprint.
How to craft the Feedback Resonator in Subnautica 2
To get the Feedback Resonator, you’ll need the Modification Station.
While the Feedback Resonator will require a Sonic Resonator, it will be added as a separate device in your inventory.
