Sennheiser CX 300S Black
Precision German transducer technology delivers detailed sound with enhanced bass response across a 17Hz-21kHz frequency range. The in-ear design with four included ear adapter sizes provides a secure fit and effective passive noise reduction, complemented by a convenient one-button inline smart remote. This wired headset is best for budget-conscious listeners who prioritize audio clarity and a reliable 3.5mm connection over wireless freedom or fitness-ready features.
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Panoramica
The 30-Second Version
Fantastic sound and best-in-class comfort in a wired package, but the build quality feels like it's held together with hope. Get them for the audio, not the longevity.
Pros & Cons
Pro
- Incredibly comfortable fit, top of the charts for in-ears 95th
- Clear, balanced sound that punches above its weight 73rd
- Tangle-free cable is a small but meaningful quality-of-life win 69th
- Includes four ear tip sizes for a near-custom fit
Contro
- Durability is a real question mark, with multiple reports of earbuds detaching
- No active noise cancellation, just passive isolation
- Build quality feels a bit fragile, especially the rotating earbud housing
- Bass response can be inconsistent depending on the seal
Cosa dicono i proprietari
The Word on the Street
Come è cambiata l'opinione dei proprietari nel tempo
EsclusivaIn base a quando i clienti hanno effettivamente scritto le recensioni, per vedere se gli elogi iniziali sono durati.
Basato su 12 recensioni dei clienti datate, raggruppate per trimestre solare. L'analisi per periodo è in inglese.
Le prove
Performance
What surprised us most is the comfort. Sitting in the 95th percentile, these things practically disappear in your ears, and the four included tip sizes mean almost anyone can get a great seal. That seal is crucial because there's no active noise cancellation here, just passive isolation. The sound itself is a strong point, landing well above average with a clear, detailed presentation. The bass isn't going to rattle your skull, and a few users note it can be inconsistent, but for vocals and acoustic tracks, it's a standout at this end of the market.
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Wearing Style | in-ear |
| Ear Tips | XS, S, M, L |
| Weight | 0.0 kg / 0.0 lbs |
Audio
| Freq Min | 17 |
| Freq Max | 21000 |
| Impedance | 18 |
| Sensitivity | 118 |
Noise Control
| ANC | No |
| Transparency | Yes |
Connectivity
| Wired Connector | 3.5mm |
Earbud Battery
| Charging | proprietary |
Case Battery
| Case Charging | proprietary |
Microphone
| Microphone | Yes |
Features
| Touch Controls | Yes |
vs Competition
The CX 300S sits in a weird spot. It sounds better than most budget wireless earbuds like the Soundcore P31i, but it lacks any modern features. If you need wireless freedom and ANC, the Sony WF-C700N is the obvious upgrade and a much more complete package. Compared to the EarFun Air Pro 4+, the Sennheiser wins on pure wired audio fidelity but loses on every single feature and convenience. This is for the person who prioritizes sound and simplicity above all else.
| Spec | Sennheiser CX 300S Black | Technics EAH-AZ100 EAH-AZ100-N | Sony WF-1000XM6 | Apple AirPods Pro 3rd Generation | Nothing Buds 2 | Samsung Galaxy Buds3 Pro |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | - | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | - | true | true | true | true | true |
| Active Noise Cancellation | false | true | true | true | true | true |
| Bluetooth Version | - | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 |
| Battery Life Hours | - | 8 | 8 | 8 | 13.5 | 6 |
| Case Battery Hours | - | 28 | 24 | 24 | 55 | 26 |
| Water Resistance | - | IPX4 | IPX4 | IP57 | IP55 | IP57 |
| Multipoint | - | true | true | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Prodotto | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Riscontro degli utenti |
|---|---|---|---|---|---|---|---|---|---|
| Sennheiser CX 300S Black | 64.8 | 39.3 | 33.9 | 68.6 | 44.8 | 94.7 | 20.5 | 45.2 | 72.6 |
| Technics EAH-AZ100 EAH-AZ100-N Compare | 97.2 | 97.5 | 79.3 | 99 | 78.8 | 72 | 97.2 | 99.8 | 81.1 |
| Sony WF-1000XM6 Compare | 97.2 | 99.8 | 79.3 | 88.4 | 75.5 | 72 | 80.3 | 99.1 | 81.1 |
| Apple AirPods Pro 3rd Generation Compare | 97.2 | 82 | 98.8 | 90.7 | 75.5 | 94.7 | 32.4 | 99.6 | 99.3 |
| Nothing Buds 2 Compare | 93 | 97.5 | 91.2 | 81.9 | 95.5 | 72 | 92.1 | 96.9 | 81.1 |
| Samsung Galaxy Buds3 Pro Compare | 97.2 | 97.5 | 98.8 | 93 | 72.9 | 94.7 | 32.4 | 99.6 | 90 |
Prezzo
Value & Pricing
For a pair of wired earbuds that sound this good, the value is excellent if you get them at the lower end of their wild $29 to $1001 price spread. Seriously, shop around. At around $30, they're a steal for the audio quality. At the higher end, you're getting into territory where you can buy true wireless earbuds with ANC and better durability. Don't overpay for these.
Price History
Approfondisci
Overview
The Sennheiser CX 300S is a classic wired in-ear that proves you don't need to spend a fortune to get genuinely good sound. The one thing to know is this: the audio is clear, balanced, and way better than the price suggests, but the build quality is a gamble. You're getting that signature Sennheiser clarity and a comfortable fit that ranks among the best we've seen, all wrapped in a tangle-free cable. Just don't expect them to survive years of abuse in your gym bag.
Common Questions
Q: Do these have a microphone and remote?
Yes, there's a one-button inline remote that handles play/pause and calls. The mic quality is just okay, fine for a quick call but nothing you'd want to use for a podcast.
Q: Are these good for working out?
No, and that's their biggest weakness. They score terribly for fitness. The cable gets in the way, there's no water resistance rating, and the build isn't durable enough to survive sweat and movement. Get a cheap pair of wireless buds for the gym.
Q: Do they block out noise?
They offer passive noise isolation thanks to the in-ear seal, which is decent for reducing background chatter. But there's no active noise cancellation, so they won't silence a plane engine or a loud office.
Who Should Skip This
If you're looking for a durable, everyday pair of earbuds that can survive a commute, a workout, and being stuffed in a pocket, this isn't it. The build quality concerns are real. Go get the Sony WF-C700N or Anker Space A40 instead. You'll trade a tiny bit of wired audio purity for a massive leap in features and reliability.
Verdict
Buy the Sennheiser CX 300S if you want a fantastic-sounding, ultra-comfortable wired backup pair for your laptop or a simple, no-fuss option for music. The sound is the star here, and it's genuinely impressive for the price. Just treat them gently. If you're hard on your gear or need something for workouts, look elsewhere because these won't last.
