In depth comparison and review of Sennheiser HD 400S and ifrogz Impulse 2. 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 | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 19.5 cm | |
| Width | - | 21.48 cm | |
| Depth | - | 8 cm | |
| Weight | 217 g | 295 g | Sennheiser HD 400S are lighter than Sennheiser HD 400S headphones. |
| Colour | Black | Blue | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | Yes | Both headphones can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Noise Isolating | Yes | - | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 20000 Hz | 20 - 20000 Hz | Sennheiser HD 400S offer a larger frequency range than ifrogz Impulse 2. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | - | 94 dB +/- 3dB | |
| Impedance | 18 Ohm | 32 Ohm | |
| Max Sound Pressure | 120 dB | - | |
| Diaphragm | - | 40 mm | |
| Magnet Material | - | Neodymium |
| MICROPHONE | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Controls | Answer/end, play/pause, next/previous track | Volume, power on/off, play/pause, next/previous track |
|---|
| CABLE | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Cable Type | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | Headphones cable - detachable Micro-USB charge cable |
|
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Detachable Cable | Yes | - |
| BATTERY AND CHARGING | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 20 hour(s) | |
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Sennheiser HD 400S | ifrogz Impulse 2 |
|---|
| Included Accessories | - | Carrying pouch | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | Limited warranty - 1 year |
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