Side by side comparison and review of Poly Blackwire C725-UC 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 C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Product Type | Headset - wired - USB | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | 700 Series | ADAPT 100 Series | |
| Weight | - | 145.3 g | |
| Colour | - | Black | |
| Earpad Material | - | Leatherette | |
| Recommended Use | Computer | Portable electronics, computer |
| SOUND QUALITY | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | Yes | - | Poly Blackwire C725-UC are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | SoundGuard | - | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Max Sound Pressure | - | 115 dB | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Operation Mode | - | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135 USB II microphone can cancel out ambient noise. |
| Frequency Response | 100 - 8000 Hz | 100 - 8000 Hz | The frequency response of the microphones in both headphones is the same. |
| REMOTE CONTROL | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Controls | Mute, volume, answer/end | Volume, answer/end |
|---|
| CABLE | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Cable Type | USB cable - 2.04 m | Headset cable | |
|---|---|---|---|
| Cable Length | 2.04 m | - |
| FEATURES | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| CONNECTIONS | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Connector Type | USB (4 PIN USB Type A) | Headset (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Poly Blackwire C725-UC | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Included Accessories | Carrying case | - | |
|---|---|---|---|
| Software Certification | - | Optimised for UC | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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