Anker Space A40
Sennheiser CX 300S Black
What Buyers Say
Anker Space A40
The Soundcore Space A40 earbuds are widely praised for their excellent sound quality, customizable EQ via the app, and strong noise cancellation. Users appreciate the long battery life, fast charging, and comfortable fit with multiple ear tip sizes. Some note that the ANC is not as powerful as premium competitors and that Bluetooth connection can occasionally drop in bumpy vehicles or certain environments. Overall, they are considered great value for the price.
Pros
- Excellent sound quality
- Customizable EQ via app
- Good noise cancellation
- Long battery life
- Fast charging
Cons
- ANC not as strong as premium competitors
- Occasional Bluetooth connection drops
- Touch controls limited to certain options at once
- Battery life slightly less than advertised
- Left ear discomfort for some users
Sennheiser CX 300S Black
The Sennheiser CX 300S earbuds receive mostly positive feedback for their clear, balanced sound quality and sturdy build, with many users praising the tangle-free cord and comfortable fit. However, several reviews highlight durability issues, including the earbuds detaching from the housing or silicon tips falling off, and one user experienced a split housing after six months. While the audio performance is widely appreciated, concerns about long-term reliability and a few reports of poor customer service temper the overall enthusiasm.
Pros
- Clear balanced sound
- Sturdy build quality
- Tangle-free cord
- Comfortable fit
- Good value for money
Cons
- Durability concerns (earbud detach)
- Silicon tips falling off
- Inconsistent bass response
- Housing splitting after months
- Poor customer service/warranty
Scores
Specifications
| Anker Space A40 | Sennheiser CX 300S Black | |
|---|---|---|
| Design | ||
| Form Factor | in-ear | in-ear |
| Wearing Style | true wireless | in-ear |
| Ear Tips | 5 sizes of silicone ear tips | XS, S, M, L |
| Weight | 0.06 kg | 0.01 kg★ |
| Audio | ||
| Driver Type | dynamic | — |
| Driver Size | 11 mm★ | — |
| Drivers | 2★ | — |
| Freq Min | 20 Hz | 17 Hz★ |
| Freq Max | 20 kHz | 21 kHz★ |
| Impedance | 16 Ω | 18 Ω |
| Sensitivity | — | 118 dB★ |
| Hi-Res Audio | ✓★ | — |
| Codecs | LDAC | — |
| Surround | Soundcore by Anker Space A40 Auto-Adjustable Active Noise Cancelling Wireless Earbuds, Reduce Noise by Up to 98%, 50H Playtime, Hi-Res Sound, App Customization, Wireless Charge (Renewed) Blue (Refresh | — |
| Noise Control | ||
| ANC | ✓★ | ✗ |
| ANC Type | adaptive | — |
| Transparency | ✓ | ✓ |
| Connectivity | ||
| Wireless | ✓★ | — |
| Bluetooth | 5.2★ | — |
| Multipoint | ✓★ | — |
| Wired Connector | Bluetooth | 3.5mm |
| Earbud Battery | ||
| Battery Life | 10 hrs★ | — |
| Charge Time | 2 hrs★ | — |
| Fast Charging | 10 min for 4 hours playback | — |
| Charging | USB-C★ | proprietary |
| Case Battery | ||
| Case Battery | 50 hrs★ | — |
| Case Charging | USB-C★ | proprietary |
| Wireless Charging | ✓★ | — |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | 6★ | — |
| NC Mic | ✓★ | — |
| Features | ||
| Voice Assistant | Siri, Google Assistant | — |
| Touch Controls | ✓ | ✓ |
| App | soundcore | — |
| Bone Conduction | ✗ | — |
| Water Resistance | IPX4 | — |
Pros & Cons
Anker Space A40
- Strong mic (98th percentile)98th %ile
- Strong connectivity (97th percentile)97th %ile
- Strong anc (97th percentile)97th %ile
- Strong sound (94th percentile)94th %ile
Sennheiser CX 300S Black
- Strong comfort (95th percentile)95th %ile
- Strong social proof (73rd percentile)
- Strong sound (68th percentile)
- Below average user sentiment (21st percentile)
- Below average build (34th percentile)
Pricing
Sennheiser CX 300S Black offers 1.3x better value for money
Verdict
Scores 84 overall, wins 7 of 7 usage categories and 15 of 36 specs.
