In depth comparison and review of Sennheiser CX True Wireless and Poly SupraPlus NC. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | Headset | |
|---|---|---|---|
| Dimensions & Weight Details | Earbud: 6 g Charging case: 5.9 cm x 4.23 cm x 3.38 cm / 37 g |
- | |
| Colour | Black | White | - | |
| Protection | Splashproof, IPX4 | - | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Headphones Form Factor | In-ear | - | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | - | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.2 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX | - | |
| Noise Isolating | Yes | - | Sennheiser CX True Wireless are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Sound Effects | Bass Boost | - | |
| Frequency Response | 5 - 21000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.08% | - | |
| Sensitivity | 110 dB | - | |
| Impedance | 16 Ohm | - | |
| Max Sound Pressure | 110 dB | - | |
| Diaphragm | 7 mm | - | |
| Simultaneously Connectable Devices Qty (Multipoint) | 1 | - | |
| Features | TrueResponse technology | - |
| MICROPHONE | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 4 | - |
| CABLE | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Cable Type | USB-C charge cable - detachable - 25 cm | - |
|---|
| FEATURES | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Features | Touch control | - | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | Yes | - | |
| Voice Control | Indirect | - | |
| Intelligent Assistant | Siri, Google Assistant | - |
| BATTERY AND CHARGING | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | - | |
|---|---|---|---|
| Battery Capacity | 60 mAh | - | |
| Battery Life | 9 hour(s) | - | |
| Battery Life Details | Continuous playback (50% volume): up to 9 hours Continuous playback (with included charging case): up to 27 hours |
- | |
| Charging Time | 1.5 hour(s) | - | |
| Included Qty | 2 | - |
| OTHERS | Sennheiser CX True Wireless | Poly SupraPlus NC |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (400 mAh) | Monitor receiver | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1 | - | |
| TAA Compliant | - | Yes |
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