In depth comparison and review of Poly Blackwire 3325 and EPOS I SENNHEISER ADAPT 135T USB-C II. 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 | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headset - wired - 3.5 mm jack, USB-C | |
|---|---|---|---|
| Series | 3300 Series | ADAPT 100 Series | |
| Height | 18.6 cm | - | |
| Width | 21.6 cm | - | |
| Depth | 5.6 cm | - | |
| Weight | 130 g | 145.3 g | Poly Blackwire 3325 are lighter than Poly Blackwire 3325 headphones. |
| Colour | - | Black | |
| Earpad Material | Leatherette | Leatherette | |
| Protection | Hearing protection | - | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Adjustable Headband | Yes | - | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 94 dB | - | |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | - | 115 dB | |
| Diaphragm | 32 mm | - | |
| Magnet Material | - | Neodymium | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Type | Boom | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Mono | |
| Noise Cancelling | Yes | Yes | The microphones on both headphones can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 100 - 8000 Hz | Poly Blackwire 3325 offer a larger microphone frequency range than EPOS I SENNHEISER ADAPT 135T USB-C II. |
| Sensitivity | -38 dB | - |
| REMOTE CONTROL | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Controls | Mute, volume, answer/end | Volume, answer/end |
|---|
| CABLE | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Cable Type | Headset cable | Headset cable |
|---|
| FEATURES | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| CONNECTIONS | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Connector Type | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
Headset (USB Type-C) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Included Accessories | Carrying pouch | - | |
|---|---|---|---|
| Software Certification | Certified for Microsoft Teams | Certified for Microsoft Teams, Optimised for UC | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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