Side by side comparison and review of Sennheiser HD 559 and Poly Blackwire 325-M. 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 | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Product Type | Headphones - wired | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | HD 5 | 300 Series | |
| Colour | Black | - | |
| Headband Material | - | Metal |
| SOUND QUALITY | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Open | - | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 14 - 26000 Hz | 20 - 20000 Hz | Sennheiser HD 559 offer a larger frequency range than Poly Blackwire 325-M. |
| Total Harmonic Distortion (THD) | 0.2% | - | |
| Sensitivity | 108 dB/Vrms | - | |
| Impedance | 50 Ohm | - | |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Frequency Response | - | 100 - 10000 Hz |
| REMOTE CONTROL | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Cable Type | Headphones cable - 3 m | Headset cable - 2.13 m | |
|---|---|---|---|
| Cable Length | 3 m | 2.13 m | |
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Additional Functions | - | DSP |
|---|
| CONNECTIONS | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Connector Type | Headphones (phone stereo 6.3 mm) | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Sennheiser HD 559 | Poly Blackwire 325-M |
|---|
| Service & Support | - | Limited warranty - 2 years |
|---|
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