In depth comparison and review of Sony MDR ZX220BT and Poly Blackwire 325. 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 | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | - | 300 Series | |
| Weight | 130 g | - | |
| Colour | Grey | Blue | Black | - | |
| Headband Material | - | Metal | |
| Recommended Use | Portable electronics | - | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sony MDR ZX220BT can be folded. |
| Connectivity Technology | Wireless | Wired | |
| 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. |
| Sensitivity | 100 dB | - | |
| Impedance | 24 Ohm | - | |
| Diaphragm | 30 mm | - | |
| Magnet Material | Neodymium | - | |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Technology | Electret condenser | - | |
| Frequency Response | 100 - 4000 Hz | 100 - 10000 Hz | Poly Blackwire 325 offer a larger microphone frequency range than Sony MDR ZX220BT. |
| Audio Input Details | Omni-directional | - |
| REMOTE CONTROL | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Controls | Volume control | Mute, volume, answer/end |
|---|
| CABLE | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Cable Type | Micro-USB cable - detachable | Headset cable - 2.13 m | |
|---|---|---|---|
| Cable Length | - | 2.13 m |
| FEATURES | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Additional Functions | - | DSP |
|---|
| BATTERY AND CHARGING | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | - | |
|---|---|---|---|
| Battery Life | 8 hour(s) | - | |
| Standby Time | 200 hours | - | |
| Charging Time | 2.5 hour(s) | - |
| WIRELESS LINK | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Transmission Range | 10 m | - | |
|---|---|---|---|
| Modulation Type | FHSS | - | |
| Radio Frequency Range | 2.4 - 2.4835GHz | - |
| CONNECTIONS | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Connector Type | Bluetooth USB |
USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Sony MDR ZX220BT | Poly Blackwire 325 |
|---|
| Service & Support | - | Limited warranty - 2 years |
|---|
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