In depth comparison and review of Poly Blackwire 325 and Shure AONIC 40. 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 | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless - 3.5 mm jack, USB-C | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 313 g | |
| Colour | - | Black | White, tan | |
| Headband Material | Metal | - | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.0 | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX, aptX HD | |
| Active Noise Cancelling | - | Yes | Shure AONIC 40 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Bass Boost, Loudness, Treble Boost, Vocal Boost, De-ess, Low Boost | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Max Input Power | - | 500 mW | |
| Sensitivity | - | 94.7 dB/mW | |
| Impedance | - | 31 Ohm | |
| Diaphragm | - | 40 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 2 | Shure AONIC 40 have the ability to connect to multiple devices simultaneously. |
| Magnet Material | - | Neodymium magnet | |
| Features | SoundGuard Technology | Environment mode | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Controls | Mute, volume, answer/end | Mute, volume, power on/off, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, ANC on/off, environment mode |
|---|
| CABLE | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Cable Type | Headset cable - 2.13 m | Audio cable - detachable USB-C cable - detachable |
|
|---|---|---|---|
| Cable Length | 2.13 m | - |
| FEATURES | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Additional Functions | DSP | - |
|---|
| BATTERY AND CHARGING | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 25 hour(s) |
| CONNECTIONS | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Audio input (mini-phone stereo 3.5 mm) USB (24 pin USB-C) |
|---|
| OTHERS | Poly Blackwire 325 | Shure AONIC 40 |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Compatibility | - | iPhone, iPad, Android phone | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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