EarbudSource — Custom Earbuds. Built for Your Brand.
B2B BULK ORDERS·MODEL SHORTLIST·SAMPLES BEFORE PRODUCTION·CHINA / VIETNAM ROUTE REVIEW
QUALITY & TESTING

Set the acceptance criteria before the build.

The validation plan is defined for the selected product, customer specification, destination market and program risk.

Request Quote & Sample PlanCompare Actual Models
VALIDATION PRINCIPLE

Test what the approved specification requires.

Not every platform needs the same test plan. We first lock the configuration, intended use and destination market, then identify the applicable checks and evidence.

TESTING SCOPE

Six areas reviewed by project.

Open a workstream to see the buyer inputs, review scope, expected records and approval route.

AC

Acoustic

Frequency response, THD, SPL, microphone response and left/right balance

Review workstream →BT

Bluetooth

Pairing, range, stability, compatibility and interference checks

Review workstream →BA

Battery

Charging, discharging, use-time evaluation and protection behavior

Review workstream →RE

Reliability

Drop, temperature, humidity, charging and control-cycle evaluation

Review workstream →EN

Environmental

Applicable IPX, ESD, aging and packaging reliability checks

Review workstream →PQ

Production QC

IQC, IPQC, functional test, final QC and outgoing inspection

Review workstream →
TEST WORKFLOW

Four checkpoints buyers can define in the validation plan.

The selected model, specification and acceptance criteria determine which checks and records apply.

TWS earbuds and charging cases connected at a functional test bench
01
Functional test

Check pairing, charging, controls and agreed product functions.

Earbud acoustic evaluation workstation with coupler and support equipment
02
Acoustic evaluation

Review the agreed acoustic and microphone measurements for the selected configuration.

Charging cases inspected under a task light beside sample trays
03
Visual inspection

Compare finish, assembly and cosmetic criteria with the approved reference.

Sample trays beside a compact environmental and handling test area
04
Reliability review

Define applicable handling, environmental and cycle checks before testing.

Workflow visuals support process discussion. Production location, equipment availability and project evidence are confirmed separately for the selected program.

QUALITY GATES

Control points from sample to shipment.

Acceptance criteria needs to be agreed before production, not negotiated after a problem.

Review product-development stages →
  1. 01

    Specification lock

    Confirm model, functions, cosmetic standard, packaging and test scope.

  2. 02

    Sample approval

    Record the approved sample and any open deviations.

  3. 03

    Incoming control

    Check applicable materials and components against the production plan.

  4. 04

    In-process control

    Monitor assembly, function and workmanship at defined checkpoints.

  5. 05

    Final inspection

    Review finished product and packaging against agreed criteria.

  6. 06

    Release evidence

    Confirm required records and shipment documentation before release.

BUYER INPUTS

Define acceptance before testing.

Send the intended market, required standard, use environment, critical functions and inspection expectation with the RFQ.

Product and firmware versionDestination countriesRequired test or standardSample quantity and test conditionAcceptance limitsReport or laboratory requirementPackaging configurationPre-shipment inspection level
NEXT ASSURANCE PAGECompliance planning and evidence statusReview destination-market requirements →START A PROJECTInclude your validation requirementsSend validation requirements →