In depth comparison and review of Sennheiser HD 450BT 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 | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - 3.5 mm jack, USB-C | |
|---|---|---|---|
| Series | - | ADAPT 100 Series | |
| Weight | 238 g | 145.3 g | EPOS I SENNHEISER ADAPT 135T USB-C II are lighter than Sennheiser HD 450BT headphones. |
| Colour | Black | White | Black | |
| Earpad Material | - | Leatherette | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 450BT 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 | - | |
| Active Noise Cancelling | Yes | - | Sennheiser HD 450BT are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 18 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 450BT offer a larger frequency range than EPOS I SENNHEISER ADAPT 135T USB-C 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 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Beamforming | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135T USB-C II microphone can cancel out ambient noise. |
| Frequency Response | 80 - 6000 Hz | 100 - 8000 Hz | EPOS I SENNHEISER ADAPT 135T USB-C II offer a larger microphone frequency range than Sennheiser HD 450BT. |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Controls | - | Volume, answer/end |
|---|
| CABLE | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Cable Type | Audio cable - detachable USB-C charge cable - detachable |
Headset cable |
|---|
| FEATURES | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | - | |
|---|---|---|---|
| Battery Capacity | 600 mAh | - | |
| Battery Life | 30 hours | - | |
| Charging Time | 2 hours | - |
| CONNECTIONS | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Connector Type | - | Headset (USB Type-C) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Sennheiser HD 450BT | EPOS I SENNHEISER ADAPT 135T USB-C II |
|---|
| Included Accessories | Carrying case | - | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams, Optimised for UC | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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