Question 1

Is this Echo good, or should I feed it?

Accepted Answer

Enter the Echo's cost, main stat and revealed substats exactly as they appear in game. The scorer runs your character's full rotation in our damage simulation and answers with a clear verdict: lock it in, keep it, use it as a stopgap, or feed it. The 0 to 100 Build Potential score shows where the piece lands between a zero-substat floor and the best possible roll for that exact slot.

Question 2

Should I keep tuning this Echo or stop?

Accepted Answer

Add substats one at a time as you tune. After every roll the scorer projects how an average finish would rank against fully tuned drops using Kuro's published tuning odds, and tells you whether the remaining tuners are worth spending or better saved for the next drop. The next-tune value even shows which stat you should hope for.

Question 3

Is this Echo better than the one my character is wearing?

Accepted Answer

Yes, that comparison is built in. Pick the exact slot the new Echo would replace and the 'vs equipped' number shows the real rotation damage change from swapping, including Sonata set bonuses that break or complete. You can score against the site's standard build or your own saved build with your sequences and weapon.

Question 4

Which character is this Echo best for?

Accepted Answer

Run the roster sweep at the bottom of the score card. It scores the same Echo on every simulated resonator, from Hiyuki and Yangyang: Xuanling to Cartethyia and Augusta, using fair standard S0 builds, and ranks who gains the most rotation damage from wearing it.

Question 5

What is the best Echo build for my character?

Accepted Answer

Every character page ships a simulation-tested standard Echo build, and the My Builds library on this page lets you compose your own five-piece sets, including mixed Sonata builds, price them against your current build, and equip them across characters without re-entering anything.

Question 6

How is the Echo score calculated? Are these stat weights?

Accepted Answer

No stat weights. Every number comes from simulating your character's actual rotation on a real damage engine: cooldowns, buffs, resource costs and set bonuses included. A substat is worth exactly the rotation damage it adds for that character, and the drop rank compares your piece against 400 randomly tuned drops rolled at Kuro's official substat odds.

Echo scorer

Building a matched comparison

Echo checker questions, answered