Side by side comparison and review of Poly Blackwire 3325 and EPOS I SENNHEISER ADAPT 135 USB II. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| 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 135 USB 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 135 USB 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 135 USB II. |
| Sensitivity | -38 dB | - |
| REMOTE CONTROL | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Controls | Mute, volume, answer/end | Volume, answer/end |
|---|
| CABLE | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Cable Type | Headset cable | Headset cable |
|---|
| FEATURES | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| CONNECTIONS | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Connector Type | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
Headset (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Poly Blackwire 3325 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Included Accessories | Carrying pouch | - | |
|---|---|---|---|
| Software Certification | Certified for Microsoft Teams | Optimised for UC | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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