Image © SennheiserBoost your sound with Sennheiser’s CX 300S earphones which offer amazingly detailed sound reproduction and enhanced bass response thanks to Sennheisers transducer technology. The in-ear design reduces ambient noise to a minimum, and the included set of ear-adapters guarantees an individualized fit with four sizes (XS, S, M, L) to choose from. A Smart remote enables you to pause music and take calls across all devices.
The Sennheiser CX 300S is a budget-friendly wired in-ear headphone with a dynamic driver, offering a bass-heavy yet versatile sound signature with clear vocals. It's a practical, lightweight choice for everyday music and calls via a 3.5mm connection, though it lacks advanced features like noise cancellation or a detachable cable.
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
| Driver | dynamic |
|---|---|
| Driver type | dynamic |
| Drivers per side | 1 |
| Frequency response | 17 Hz - 21 kHz |
| Impedance | 18 Ω |
| Sensitivity | 118 dB/mW |
| Driver | dynamic |
|---|---|
| Driver type | dynamic |
| Drivers per side | 1 |
| Frequency response | 17 Hz - 21 kHz |
| Impedance | 18 Ω |
| Sensitivity | 118 dB/mW |
| Active noise cancelling | No |
|---|---|
| Controls | buttons |
| Weight | 12 g |
|---|---|
| Detachable cable | No |
| USB-C | No |
| Connector | 3.5 mm |
| Microphones | 1 |
|---|---|
| Microphone type | MEMS |
| Mic sensitivity | -44 dBV |
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5 source(s) feeding this product's score.
Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.
Reviewers generally agree that the Sennheiser CX 300S offers solid build quality and good sound, with praise for its clear mids, punchy bass, and effective noise isolation, though one noted the bass isn't powerful.
4:04The reviewer finds the Sennheiser CX 300S earbuds to be well-built with good sound and microphone quality, but they are unusable for them due to a poor fit that causes them to fall out and break the seal, leading to a return. They recommend caution for potential buyers regarding the fit.
3:35The reviewer finds the Sennheiser CX 300S to be a solid wired in-ear option, praising its punchy bass, clear mids, and effective passive noise isolation. They note the build quality is durable and the smart remote is functional, though basic, and the lack of volume control and microphonic cable noise are minor drawbacks. Overall, they consider it excellent value for those who don't need wireless features.
3:25The reviewer finds the Sennheiser CX 300S to be a solid budget option, offering balanced sound, a comfortable fit with multiple ear tip sizes, and a convenient inline remote. While the bass is not powerful and the cable is prone to tangling, the overall performance and value make them a good choice for everyday listening.
Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.
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