In depth comparison and review of ASTRO A20 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 | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Product Type | Headset - wireless | Headset - Bluetooth - wireless - USB-C | |
|---|---|---|---|
| Series | - | UC Series | |
| Weight | 320 g | 150 g | Poly Voyager 4220 Office (UC Series) are lighter than ASTRO A20 headphones. |
| Colour | Black, green | Navy, Call of Duty | Silver, Call of Duty | Black, blue | - | |
| Headband Material | Steel | - | |
| Recommended Use | Game console, computer | - | |
| Bluetooth Range (Operating Distance) | 9.14 m | 30 m | Poly Voyager 4220 Office (UC Series) have a greater operating distance than ASTRO A20. |
| SOUND QUALITY | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Connectivity Technology | Wireless | 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 | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Total Harmonic Distortion (THD) | <3% | - | |
| Sensitivity | 100 dB | 94 dB | ASTRO A20 have higher sensitivity than Poly Voyager 4220 Office (UC Series). |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | 32 mm | ASTRO A20 have a thicker diaphragm than Poly Voyager 4220 Office (UC Series). |
| Magnet Material | Neodymium | - | |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Operation Mode | - | Uni-directional | |
| Audio Input Details | Uni-directional | - | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Controls | Volume, power on/off | Mute, volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Cable Type | Micro-USB cable - detachable - 1 m Audio (optical) cable - detachable - 1 m Micro-USB cable - detachable - 50 cm |
- | |
|---|---|---|---|
| Cable Length | 1 m | - | |
| Detachable Cable | Yes | - |
| FEATURES | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Features | - | Voice alerts |
|---|
| BATTERY AND CHARGING | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Battery Type | Headset battery rechargeable | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 360 mAh | |
| Battery Life | 15 hour(s) | 12 hour(s) | ASTRO A20 lasts longer on a single charge than the Poly Voyager 4220 Office (UC Series). |
| 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) |
| OTHERS | ASTRO A20 | Poly Voyager 4220 Office (UC Series) |
|---|
| Included Accessories | Wireless transmitter | Wireless headset system base, Bluetooth USB-C adapter | |
|---|---|---|---|
| Compatibility | Mac, Windows | - |
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