In depth comparison and review of Poly Blackwire 325-M and AKG K812. 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-M | AKG K812 |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 390 g | |
| Colour | - | Black | |
| Headband Material | Metal | - | |
| Recommended Use | - | Professional audio |
| SOUND QUALITY | Poly Blackwire 325-M | AKG K812 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Ear Cups Type | - | Open | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 5 - 54000 Hz | AKG K812 offer a larger frequency range than Poly Blackwire 325-M. |
| Max Input Power | - | 300 mW | |
| Sensitivity | - | 110 dB | |
| Impedance | - | 36 Ohm | |
| Diaphragm | - | 53 mm | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325-M | AKG K812 |
|---|
| Type | Boom | - | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325-M | AKG K812 |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 325-M | AKG K812 |
|---|
| Cable Type | Headset cable - 2.13 m | Headphones cable - detachable - 3 m | |
|---|---|---|---|
| Cable Length | 2.13 m | 3 m | |
| Detachable Cable | - | Yes | |
| Plated Connector | - | Gold |
| FEATURES | Poly Blackwire 325-M | AKG K812 |
|---|
| Additional Functions | DSP | - |
|---|
| CONNECTIONS | Poly Blackwire 325-M | AKG K812 |
|---|
| 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 | AKG K812 |
|---|
| Included Accessories | - | 6.3 mm (1/4") stereo adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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