Side by side comparison and review of Sennheiser HD 350BT 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 | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | - | ADAPT 100 Series | |
| Weight | 238 g | 145.3 g | EPOS I SENNHEISER ADAPT 135 USB II are lighter than Sennheiser HD 350BT headphones. |
| Colour | Black | White | Black | |
| Earpad Material | - | Leatherette | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 350BT can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.0 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX, apt-X LL | - | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 18 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 350BT offer a larger frequency range than EPOS I SENNHEISER ADAPT 135 USB II. |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Max Sound Pressure | 108 dB | 115 dB | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Beamforming | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135 USB II microphone can cancel out ambient noise. |
| Frequency Response | 80 - 6000 Hz | 100 - 8000 Hz | EPOS I SENNHEISER ADAPT 135 USB II offer a larger microphone frequency range than Sennheiser HD 350BT. |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Controls | - | Volume, answer/end |
|---|
| CABLE | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Cable Type | USB-C charge cable - detachable | Headset cable |
|---|
| FEATURES | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | - | |
|---|---|---|---|
| Battery Capacity | 300 mAh | - | |
| Battery Life | 30 hours | - | |
| Charging Time | 2 hours | - |
| CONNECTIONS | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Connector Type | - | Headset (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Sennheiser HD 350BT | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Software Certification | - | Optimised for UC | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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