In depth comparison and review of Sennheiser HD 4.40 and Sennheiser HD 350BT. 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 4.40 | Sennheiser HD 350BT |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 238 g | |
| Colour | - | Black | White |
| SOUND QUALITY | Sennheiser HD 4.40 | Sennheiser HD 350BT |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Foldable | - | Yes | Sennheiser HD 350BT can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.0 | Bluetooth 5.0 | Sennheiser HD 350BT have a more advanced version of Bluetooth than Sennheiser HD 4.40. |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX, apt-X LL | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 18 - 22000 Hz | Both headphones offer the same frequency response. |
| Total Harmonic Distortion (THD) | 0.5% | <0.3% | Sennheiser HD 350BT have lower total harmonic distortion than Sennheiser HD 4.40. |
| Sensitivity | 113 dB | - | |
| Impedance | 18 Ohm | - | |
| Max Sound Pressure | - | 108 dB |
| MICROPHONE | Sennheiser HD 4.40 | Sennheiser HD 350BT |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | Beamforming | |
| Frequency Response | 100 - 10000 Hz | 80 - 6000 Hz | Sennheiser HD 4.40 offer a larger microphone frequency range than Sennheiser HD 350BT. |
| Microphones Included | 2 | 2 | Both headphones have a built-in microphone. |
| CABLE | Sennheiser HD 4.40 | Sennheiser HD 350BT |
|---|
| Cable Type | - | USB-C charge cable - detachable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.40 | Sennheiser HD 350BT |
|---|
| Battery Type | Headphone battery lithium polymer | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 300 mAh | |
| Battery Life | - | 30 hours | |
| Charging Time | - | 2 hours |
| OTHERS | Sennheiser HD 4.40 | Sennheiser HD 350BT |
|---|
| Service & Support | - | Limited warranty - 2 years |
|---|
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