Side by side comparison and review of Poly Blackwire 3325 and MSI H991. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Poly Blackwire 3325 | MSI H991 |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headset - wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 3300 Series | - | |
| Height | 18.6 cm | - | |
| Width | 21.6 cm | - | |
| Depth | 5.6 cm | - | |
| Weight | 130 g | 300 g | Poly Blackwire 3325 are lighter than Poly Blackwire 3325 headphones. |
| Earpad Material | Leatherette | - | |
| Protection | Hearing protection | - | |
| Recommended Use | - | Computer |
| SOUND QUALITY | Poly Blackwire 3325 | MSI H991 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 94 dB | 101 dB +/- 3dB | MSI H991 have higher sensitivity than Poly Blackwire 3325. |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 32 mm | 40 mm | MSI H991 have a thicker diaphragm than Poly Blackwire 3325. |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 3325 | MSI H991 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Operation Mode | - | Omni-directional | |
| Noise Cancelling | Yes | - | Poly Blackwire 3325 microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | - | |
| Sensitivity | -38 dB | -47 dB | |
| Sensitivity Margin | - | +/- 3dB | |
| Impedance | - | 2.2 kOhm |
| REMOTE CONTROL | Poly Blackwire 3325 | MSI H991 |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 3325 | MSI H991 |
|---|
| Cable Type | Headset cable | - | |
|---|---|---|---|
| Cable Length | - | 1.5 m |
| CONNECTIONS | Poly Blackwire 3325 | MSI H991 |
|---|
| Connector Type | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Poly Blackwire 3325 | MSI H991 |
|---|
| Included Accessories | Carrying pouch | - | |
|---|---|---|---|
| Software Certification | Certified for Microsoft Teams | - | |
| Service & Support | Limited warranty - 2 years | - |
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