Technical Knowledge

The engineering, explained plainly.

Deep-dives on how true wireless earbuds actually work — the same understanding an engineer would hand you before you commit to a product.

Engineering
Engineering

How True Wireless Earbuds Are Built

A teardown-level tour of TWS architecture: acoustic chamber, antenna placement, batteries, the charging case — and why "good" earbuds are hard to copy.

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Cost & Sourcing
Cost & Sourcing

Component & Accessory Price Guide

Realistic BOM price ranges for chipsets, drivers, batteries, mics and cases — and what each upgrade actually buys you.

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Compliance
Compliance

Certifications for Bluetooth Earbuds

CE, FCC, BQB, RoHS, UKCA: what each covers, what it costs, and the mistakes that get shipments held at customs.

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New here? Start with the Component Price Guide — it explains most of the price difference between a $5 and a $40 earbud, and it's the foundation every other sourcing decision builds on.