In depth comparison and review of Sennheiser HD 400S and Poly Blackwire 8225. 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 HD 400S | Poly Blackwire 8225 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-C | |
|---|---|---|---|
| Weight | 217 g | 186 g | Poly Blackwire 8225 are lighter than Sennheiser HD 400S headphones. |
| Colour | Black | - | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Foldable | Yes | - | Sennheiser HD 400S can be folded. |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire 8225 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Hybrid ANC | |
| Noise Isolating | Yes | - | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 18 - 20000 Hz | 20 - 20000 Hz | Sennheiser HD 400S offer a larger frequency range than Poly Blackwire 8225. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | - | 84 dB | |
| Impedance | 18 Ohm | 32 Ohm | |
| Max Sound Pressure | 120 dB | - | |
| Diaphragm | - | 32 mm | |
| Features | - | SoundGuard DIGITAL Technology |
| MICROPHONE | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Poly Blackwire 8225 microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 100 - 10000 Hz | The frequency response of the microphones in both headphones is the same. |
| Sensitivity | - | -35 dBV/Pascal |
| REMOTE CONTROL | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Controls | Answer/end, play/pause, next/previous track | Mute, volume, answer/end |
|---|
| CABLE | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Cable Type | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | Headset cable - 2.2 m | |
|---|---|---|---|
| Cable Length | 1.4 m | 2.2 m | |
| Detachable Cable | Yes | - |
| CONNECTIONS | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headset (USB Type-C) |
|---|
| OTHERS | Sennheiser HD 400S | Poly Blackwire 8225 |
|---|
| Software Certification | - | Zoom Certified | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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