Side by side comparison and review of Sennheiser PXC 550-II 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 PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | - | ADAPT 100 Series | |
| Height | 17.4 cm | - | |
| Width | 13.6 cm | - | |
| Depth | 6.3 cm | - | |
| Weight | 227 g | 145.3 g | EPOS I SENNHEISER ADAPT 135 USB II are lighter than Sennheiser PXC 550-II headphones. |
| Colour | - | Black | |
| Earpad Material | - | Leatherette | |
| Recommended Use | Portable electronics | Portable electronics, computer |
| SOUND QUALITY | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Adjustable Headband | Yes | - | |
| Foldable | Yes | - | Sennheiser PXC 550-II 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 PXC 550-II are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 17 - 23000 Hz | 20 - 20000 Hz | Sennheiser PXC 550-II offer a larger frequency range than EPOS I SENNHEISER ADAPT 135 USB II. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 110 dB | - | |
| Impedance | 490 Ohm | - | |
| Max Sound Pressure | - | 115 dB | |
| Diaphragm | 32 mm | - | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135 USB II microphone can cancel out ambient noise. |
| Frequency Response | 50 - 10000 Hz | 100 - 8000 Hz | Sennheiser PXC 550-II offer a larger microphone frequency range than EPOS I SENNHEISER ADAPT 135 USB II. |
| Sensitivity | -34 dBV/Pascal | - | |
| Microphones Included | 3 | - |
| REMOTE CONTROL | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Controls | Mute, volume, answer/end, hold, play/pause, next/previous track | Volume, answer/end |
|---|
| CABLE | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Cable Type | USB charge cable Audio cable |
Headset cable | |
|---|---|---|---|
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Features | - | EPOS ActiveGard | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | Yes | - | |
| Intelligent Assistant | Siri, Google Assistant, Alexa | - | |
| Additional Functions | Touch panel | - |
| BATTERY AND CHARGING | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Battery Type | Headphone battery rechargeable - lithium | - | |
|---|---|---|---|
| Battery Life | 30 hour(s) | - | |
| Battery Life Details | Continuous playback (noise cancelling ON / cable connection): up to 30 hours Continuous playback (noise cancelling ON / Bluetooth): up to 20 hours |
- | |
| Charging Time | 3 hour(s) | - |
| CONNECTIONS | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) USB (micro-USB) |
Headset (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Sennheiser PXC 550-II | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Included Accessories | Carrying case, airplane adapter | - | |
|---|---|---|---|
| Software Certification | - | Optimised for UC | |
| Compliant Standards | MFI | - | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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