Sennheiser CX300S Pure Bass Wired Earphone

Sennheiser sound

Warm, refined bass

The CX line’s calling card: full low-end that stays musical — tuned by people who’ve tuned headphones since 1945.

Universal remote

One button, both platforms

The smart remote’s single button handles calls and playback identically on Android and iPhone-with-adapter — no wiring roulette.

Isolating fit

Seal in, noise out

Deep-seal ear tips in four sizes block commuter rumble passively — music at lower, safer volumes.

Right choice if you…

✔ Want the Sennheiser name in your pocket pair
✔ Prefer warm, refined bass over boom
✔ Need passive isolation on commutes
✔ Use devices across both ecosystems

Consider something else if…

✖ You want wireless — different aisle
✖ Treble-forward analytical taste — the CX leans warm
✖ No jack and no adapter — the eternal caveat

Sennheiser CX 300S — Technical Specifications

In the Box

Frequently Asked Questions

How does it compare to budget OEM pairs?

A clear class up — driver refinement and consistency are what the Sennheiser premium buys; A-B it against a bundled pair and the gap is immediate.

Does the remote really work on both platforms?

Yes — the single-button smart remote was designed cross-platform; play, pause, calls and track skips behave identically.

Is the bass overwhelming?

Full but controlled — warm Sennheiser, not boom-tube.

Which tip size should I start with?

Medium, then adjust — the seal is the sound; four sizes ship in the box.

Condition

Brand New — Retail Packaging

Warranty

Manufacturer warranty

Delivery

4–5 Working Days · Fully Tracked

Also Available at maibo