Detailed comparison and review of Poly Blackwire 325-M and JBL LIVE 670NC. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless, wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 219 g | |
| Colour | - | Black | |
| Headband Material | Metal | - | |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Foldable | - | Yes | JBL LIVE 670NC can be folded. |
| Connectivity Technology | Wired | Wireless, wired | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.3 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Active Noise Cancelling | - | Yes | JBL LIVE 670NC are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | True Adaptive Noise Canceling | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Signature Sound, JBL Spatial Sound | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | - | 98 dB | |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | - | 95 dB | |
| Diaphragm | - | 40 mm | |
| Features | SoundGuard Technology | TalkThru technology, 2 devices connectivity, Ambient Aware, Auto Play, Auto Pause, Speed Charge, Smart Ambient | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Audio Input Details | - | Beamforming | |
| Sensitivity | - | -38 dBV/Pascal | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Controls | Mute, volume, answer/end | On/off, answer/end, voice assistant |
|---|
| CABLE | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Cable Type | Headset cable - 2.13 m | USB-C charge cable - detachable Headphones cable - detachable - 2 m |
|
|---|---|---|---|
| Cable Length | 2.13 m | 2 m | |
| Detachable Cable | - | Yes |
| FEATURES | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Features | - | Touch control | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | - | Yes | |
| Intelligent Assistant | - | Google Assistant, Alexa | |
| Sensors | - | Touch sensor | |
| Additional Functions | DSP | - |
| BATTERY AND CHARGING | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Battery Type | - | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 850 mAh | |
| Battery Life | - | 65 hour(s) | |
| Battery Life Details | - | Continuous playback (active noise-cancelling on) (noise cancelling ON / Bluetooth): up to 50 hours Continuous playback (active noise-cancelling off) (noise cancelling OFF / Bluetooth): up to 65 hours Continuous playback (active noise-cancelling on) (noise cancelling ON / cable connection): up to 40 hours Continuous talk (active noise-cancelling on) (noise cancelling ON): up to 28 hours Continuous talk (active noise-cancelling off) (noise cancelling OFF): up to 33 hours |
|
| Charging Time | - | 3 hour(s) |
| CONNECTIONS | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Poly Blackwire 325-M | JBL LIVE 670NC |
|---|
| Included Accessories | - | Carrying pouch, audio cable, USB-C charging cable | |
|---|---|---|---|
| Compatibility | - | Android phone, Windows, Android tablet | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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