Wuthering Waves 3.7 Xin Build Guide: Echoes, Teams and QoL Changes

Applicable version: 3.7 (opened 2026-09-30, expected to run to 2026-11-12; subject to official notice)

Wuthering Waves 3.7 overview: new Resonators and three QoL changes

New units and re-runs

Version 3.7 adds two five-star Resonators, Xin (Electro Rectifier) and Suoming (Electro Sword), with re-runs for Yuno, Linne, Chisa and Losella (source: official version preview and third-party schedules, subject to official notice).

Echo stacking and team presets

Same-name same-set Echoes now stack automatically, which takes pressure off the inventory at a stroke. Team presets expanded to twenty slots with a 3D dynamic preview, and the history recap restores older main story so returning players can catch up . Stacking matters more than it looks: previously you had to purge Echoes to keep the bag from overflowing, and now you can hold them for future substat changes. If you have been sitting on dozens of spare Echoes from earlier versions, this is the version where that finally stops costing you anything.

Wuthering Waves 3.7 Xin role: a Rectifier with two forms

Xin is the first playable Sentinel, with two combat forms, two Resonance Liberations and two Resonance states, letting her deal Electro damage or support the team through damage buffs and coordinated attacks .

Main damage or sub damage

The community argument about her lives exactly here: the main damage route leans on Resonance Skill damage, while the sub route leans on Concerto and Shining Spark to buff the team . Two forms mean one character fills two jobs, but they also mean you cannot max both stat lines at once.

Set the role before farming Echoes

Xin's core is Resonance Skill damage, and the substat lines for the two routes diverge completely . Decide the route first, or you will build a half-finished set that fits neither. Wuthering Waves best teams follow the same rule: the role decides the set, not the reverse.

Wuthering Waves 3.7 Xin Echo and stat priorities

Set and first Echo

For an Electro Rectifier, the first Echo slot should prioritise Resonance Efficiency or Resonance Skill damage. The new Jiexing Sha Echo added in 3.7 suits fast clear situations and boosts Resonance Efficiency when equipped as the first slot .

Stat priority table

Role	Priority stats	Why
Main damage	Resonance Skill damage bonus, attack, crit	All output sits on the Resonance Skill
Sub damage	Resonance Efficiency, damage bonus	Keeps the Liberation loop running
General	Crit rate, then crit damage, then attack	Top up crit rate before crit damage

A new Echo management habit

With automatic stacking in place, keep Echoes grouped by set rather than by count . Stacking only solves inventory slots, not substat filtering, so a messy bag still leaves you unable to find a usable piece. Sort by set first, then by main stat, and only then compare substats; that order is what keeps a stacked bag usable.

Wuthering Waves 3.7 team presets and Tower prep

What twenty preset slots change

Twenty preset slots let you archive teams per content type instead of rebuilding each time. Endgame demand and daily demand look very different, and separate slots save real time.

Building around a multi-form unit

A multi-form unit like Xin still wants teammates for element synergy and on-field handoffs, so a sub-damage slot and a healer remain standard . Community tier lists rank units by individual ceiling, but actual teams live or die on whether they can sustain her Liberation loop.

Wuthering Waves 3.7 pull planning: Suoming and the re-runs

Is Xin worth pulling

Xin covers both main damage and sub damage, so she is flexible, and the barrier is substat investment . Players missing Electro damage gain the most; players with a finished Electro main should first check whether she fills a Concerto slot.

Suoming and four re-runs

Suoming is an Electro Sword unit, so sharing an element with Xin means they may compete for the same team slots . The re-runs for Yuno, Linne, Chisa and Losella suit topping up key Resonance Chains, and chasing a new unit plus a re-run at once does not work because 3.7 only funds one line.More Wuthering Waves coverage at gghubs.com guides.

Wuthering Waves FAQ

When does 3.7 end?

A: 3.7 opened on 2026-09-30 and is expected to run to 2026-11-12, subject to official notice .

Should Xin be main damage or sub damage?

A: Missing Electro damage means main damage with Resonance Skill stats; with a finished main already, run sub damage with Resonance Efficiency .

Which Echo stat first?

A: Crit rate first if you are under the threshold, then crit damage and attack; main damage adds Resonance Skill damage bonus .

Is Suoming worth pulling?

A: Depends on whether your Sword slot is empty. Sharing Electro with Xin may mean competing resources, so check the gap first .

Why care about twenty preset slots?

A: You can archive endgame and daily teams separately instead of rebuilding each time .

Wuthering Waves 3.7 action list

1. Decide Xin's route before you farm a single Echo.
2. Keep Echoes grouped by set, not by raw count.
3. Push crit rate first, then crit damage and attack.
4. Use the extra preset slots to split endgame and daily teams.
5. Spend pulls along one line, not on a new unit and a re-run together.
6. Keep a spare copy of any Echo whose substat roll you have not inspected, since stacking makes hoarding cheap.