In depth comparison and review of Poly - Plantronics Backbeat FIT 505 and Sennheiser HD 400S. 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 - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Height | 6.726 cm | - | |
| Width | 14.877 cm | - | |
| Depth | 17.155 cm | - | |
| Weight | 155 g | 217 g | Poly - Plantronics Backbeat FIT 505 are lighter than Poly - Plantronics Backbeat FIT 505 headphones. |
| Colour | Black | Black | |
| Earpad Material | Memory foam | - | |
| Headband Material | Memory foam | - | |
| Protection | Moisture-resistant, sweat-resistant | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Foldable | - | Yes | Sennheiser HD 400S can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.1 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Noise Isolating | - | Yes | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 50 - 20000 Hz | 18 - 20000 Hz | Sennheiser HD 400S offer a larger frequency range than Poly - Plantronics Backbeat FIT 505. |
| Total Harmonic Distortion (THD) | <3% | 0.5% | Sennheiser HD 400S have lower total harmonic distortion than Poly - Plantronics Backbeat FIT 505. |
| Impedance | 32 Ohm | 18 Ohm | |
| Max Sound Pressure | - | 120 dB | |
| Diaphragm | 40 mm | - |
| MICROPHONE | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | On-cable | |
| Frequency Response | - | 100 - 10000 Hz |
| REMOTE CONTROL | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Controls | Answer/end, play/pause, next/previous track | Answer/end, play/pause, next/previous track |
|---|
| CABLE | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Cable Type | Micro-USB charge cable Audio cable |
Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | |
|---|---|---|---|
| Cable Length | - | 1.4 m | |
| Detachable Cable | - | Yes |
| BATTERY AND CHARGING | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Battery Type | Headphone battery rechargeable | - | |
|---|---|---|---|
| Battery Life | 18 hour(s) | - | |
| Standby Time | 480 hours | - | |
| Charging Time | 1.5 hour(s) | - |
| WIRELESS LINK | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Transmission Range | 10 m | - |
|---|
| CONNECTIONS | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Poly - Plantronics Backbeat FIT 505 | Sennheiser HD 400S |
|---|
| Service & Support | - | Limited warranty - 2 years |
|---|
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