Detailed comparison and review of Poly Blackwire 325-M and Sennheiser HD 820. 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 | Sennheiser HD 820 |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - wired | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 360 g | |
| Earpad Material | - | Microfibre | |
| Headband Material | Metal | - |
| SOUND QUALITY | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Connectivity Technology | Wired | Wired | |
| Noise Isolating | - | Yes | Sennheiser HD 820 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 6 - 48000 Hz | Sennheiser HD 820 offer a larger frequency range than Poly Blackwire 325-M. |
| Sensitivity | - | 103 dB/Vrms | |
| Impedance | - | 300 Ohm | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Type | Boom | - | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Cable Type | Headset cable - 2.13 m | Headphones cable - OFC - 3 m | |
|---|---|---|---|
| Cable Length | 2.13 m | 3 m | |
| Plated Connector | - | Gold |
| FEATURES | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Additional Functions | DSP | - |
|---|
| CONNECTIONS | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Poly Blackwire 325-M | Sennheiser HD 820 |
|---|
| Included Accessories | - | USB flash drive, microfibre cleaning cloth, 4.4 mm Pentaconn stereo jack plug, XLR-4 connector | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
