Field Test · Studio Gear Review
Sennheiser CX 80S
Technical assessment of the Sennheiser CX 80S in-ear headphones performance
Sennheiser
- In-Ear Headphones
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Spec Sheet
- Dynamic
- Closed
- Frequency range: 17 – 20,000 Hz
- Maximum level: 119 dB SPL @ 1 kHz, 1V RMS
- Impedance: 28 Ohm
- Distortion factor (1 kHz, 100 dB) < 0.5
- 1.2 m cable with right-angled 3.5 mm jack plug
- Weight: 10 g
- Includes ear tips in 3 different sizes (S/M/L)
Studio Log
| Available since | February 2021 |
|---|---|
| Item number | 514276 |
| Sales Unit | 1 piece(s) |
| Design | In-Ear |
| System | CLosed Back |
| Impedance | 28 Ohms |
| Frequency range | 17 Hz – 20000 Hz |
| Adapter | No |
| Replacable Cable | No |
| Marrone/Argento | Black |
| Sensitivity | 119 dB |
| Type Of Connector | Mini Jack |
| Weight | 10 g |
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QC Pass — Field Test
Customer Review Summary
[META]A detailed test of the Sennheiser CX 80S in-ear headphones, evaluating sound quality, design, and microphone performance for £26.Introduction to the Sennheiser CX 80S
Released in February 2021, the Sennheiser CX 80S are entry-level in-ear headphones priced at £26. Designed with a closed-back dynamic system, these lightweight 10-gram earphones feature a 28 Ohm impedance and support a frequency range from 17 Hz to 20,000 Hz. They come equipped with a 1.2-metre cable terminating in a right-angled 3.5 mm mini jack plug. This model includes three sizes of soft ear tips to assist with fit and noise isolation.
Build Quality and Design
The construction of the CX 80S uses durable materials intended for daily use. Despite the affordable price point, the headphones feel robust and solid in hand. The design is simple and practical, with a black finish lending a discreet appearance. However, the ear pieces do not pivot, which can affect comfort and fit for users with different ear shapes. The cable is moderately thick, which limits microphonic noise from movement or clothing contact but does not eliminate it entirely.
Fit and Comfort
Users receive three sizes of soft ear tips (small, medium, large) that enhance comfort and seal. This flexibility helps achieve decent sound isolation and contributes to a stable fit during prolonged wear. The lightweight design also aids comfort, but some users have noted the headphones may clamp the ear area somewhat firmly, which could lead to discomfort over extended periods.
Sound Performance
The CX 80S deliver surprisingly good audio performance for their price category. Bass response is present and impactful compared to typical in-ear models around this budget, but it is not as deep or pronounced as on more premium units. The frequency range from 17 Hz to 20 kHz covers the audible spectrum adequately with a sensitivity of 119 dB, providing ample volume without distortion at general listening levels.
- Bass: Clear and punchy for in-ear headphones at this cost, though not exceptional.
- Mids: Generally well defined, allowing vocals and podcasts to be clear.
- Highs: Slightly subdued, lacking brightness but free from harshness.
Classical music and more detailed genres reveal some limitations in resolution and sonic depth, but the overall sound is balanced and pleasant for casual everyday use.
Microphone Quality
A noteworthy feature is the built-in microphone on the single cable with a four-contact jack, designed for headset use with mobile devices. Feedback from users suggests the microphone produces clean and clear voice capture, suitable for calls, online meetings, and podcasts. This sets the CX 80S apart from other budget headphones that often neglect microphone quality.
Durability and Longevity
There have been mixed reports regarding the long-term durability of the CX 80S. While build materials seem solid at first, some users experienced failures in one ear after only a couple of months’ occasional use. Without a replaceable cable, cable damage is a particular risk which could limit the lifespan of the product. Despite this, the headphones stand up well to daily handling and transport within their price segment.
Additional Observations
- The 3.5 mm connector supports both audio and microphone signals, compatible with most smartphones but may not fit securely with all devices or cases.
- Sennheiser’s choice to avoid wireless technology keeps costs low and sound quality stable by removing battery or Bluetooth interferences.
- Cable noise remains noticeable under certain conditions, which may detract for users seeking ultra-clean listening experiences.
Conclusion
The Sennheiser CX 80S offer a solid audio and microphone experience for under £30, making them an attractive option for budget-conscious consumers needing wired earphones with voice call capabilities. The sound is clear, bass is better than expected at this price, and the inclusion of a microphone works well for conferencing and communication tasks. Limitations include the fixed cable, some comfort issues due to lack of ear piece pivot, and moderate cable noise.
For listeners who prioritise durability and refined sound, higher-end alternatives may be preferable. However, considering the price and intended everyday use, the CX 80S deliver commendable performance and remain a practical choice while wired audio remains standard on mobile devices.
