In depth comparison and review of Sennheiser HD 25 Plus and Poly Voyager 4220 Office (UC Series). 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 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - USB-C | |
|---|---|---|---|
| Series | - | UC Series | |
| Weight | 140 g | 150 g | Sennheiser HD 25 Plus are lighter than Sennheiser HD 25 Plus headphones. |
| Design | DJ | - | |
| Recommended Use | Professional audio, home audio | - | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 16 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 25 Plus offer a larger frequency range than Poly Voyager 4220 Office (UC Series). |
| Total Harmonic Distortion (THD) | 0.3% | - | |
| Sensitivity | 120 dB | 94 dB | Sennheiser HD 25 Plus have higher sensitivity than Poly Voyager 4220 Office (UC Series). |
| Impedance | 70 Ohm | 32 Ohm | |
| Diaphragm | - | 32 mm | |
| Features | - | SoundGuard Technology |
| MICROPHONE | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Uni-directional | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Controls | - | Mute, volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Cable Type | Headphones cable - 1.3 m Headphones cable - 1.5 m |
- |
|---|
| FEATURES | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Features | - | Voice alerts |
|---|
| BATTERY AND CHARGING | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Battery Type | - | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 360 mAh | |
| Battery Life | - | 12 hour(s) | |
| Battery Life Details | - | Continuous playback: up to 15 hours Continuous talk: up to 12 hours |
|
| Standby Time | - | 312 hours | |
| Charging Time | - | 1.5 hour(s) |
| CONNECTIONS | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
|---|
| OTHERS | Sennheiser HD 25 Plus | Poly Voyager 4220 Office (UC Series) |
|---|
| Included Accessories | Protective pouch, 3.5 mm to 6.3 mm adapter, 2 pairs of earpads | Wireless headset system base, Bluetooth USB-C adapter |
|---|
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