In depth comparison and review of Sennheiser HMDC 27 and Poly Voyager Surround 80 UC. 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 HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Product Type | Headset - wired | Headphones - Bluetooth - wireless, wired - 3.5 mm jack, USB-C via Bluetooth adapter | |
|---|---|---|---|
| Series | - | Voyager Surround 80 series | |
| Height | - | 18.1 cm | |
| Width | - | 19.1 cm | |
| Depth | - | 7.7 cm | |
| Weight | 240 g | 275 g | Sennheiser HMDC 27 are lighter than Sennheiser HMDC 27 headphones. |
| Colour | - | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | Professional audio | Computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wired | Wireless, wired | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.3 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Audio/Video Distribution Transport Protocol (AVDTP) | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Adaptive Active Noise Cancellation | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 8 - 18000 Hz | 20 - 20000 Hz | Poly Voyager Surround 80 UC offer a larger frequency range than Sennheiser HMDC 27. |
| Total Harmonic Distortion (THD) | <0.1% | - | |
| Sensitivity | - | 132 dB | |
| Max Sound Pressure | 128 dB | - | |
| Diaphragm | - | 40 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 2 | Poly Voyager Surround 80 UC have the ability to connect to multiple devices simultaneously. |
| Features | - | SoundGuard DIGITAL Technology |
| MICROPHONE | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Technology | Dynamic | - | |
| Microphone Operation Mode | Hypercardioid | - | |
| Frequency Response | 40 - 18000 Hz | 100 - 6800 Hz | Sennheiser HMDC 27 offer a larger microphone frequency range than Poly Voyager Surround 80 UC. |
| Sensitivity | - | -37 dB | |
| Microphones Included | - | 6 |
| REMOTE CONTROL | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Controls | - | Mute, volume, power on/off, play/pause, next/previous track, pair mode, Microsoft Teams button |
|---|
| CABLE | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Cable Type | - | USB-C charge cable - detachable USB-C to mini-phone 3.5 mm cable - detachable USB-C to USB-A adapter - detachable |
|---|
| FEATURES | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Features | EPOS ActiveGard | In-call LED indicator, touch control, Smart Sensor Technology |
|---|
| BATTERY AND CHARGING | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Battery Type | - | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 1100 mAh | |
| Battery Life | - | 24 hours | |
| Battery Life Details | - | Continuous talk: up to 21 hours Continuous playback: up to 24 hours Continuous talk (with 15 min charge): up to 10 hours |
|
| Standby Time | - | 21 days | |
| Charging Time | - | 1 hour(s) |
| CONNECTIONS | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Sennheiser HMDC 27 | Poly Voyager Surround 80 UC |
|---|
| Included Accessories | Wind screen, cable clip, headband padding | Carrying case, 3.5 mm to USB-C cable, USB-C to USB-A adapter, BT700 Bluetooth USB-C adapter, USB-C charge cable | |
|---|---|---|---|
| Software Included | - | Poly Lens | |
| Compatibility | - | Mac, Windows | |
| Software Certification | - | Certified for Microsoft Teams, Certified for Microsoft Teams Open Office | |
| Supported Host Device OS | - | macOS, Android, iOS, Windows |
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