Detailed comparison and review of Sennheiser HD 4.20s and Sennheiser HD 450BT. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 238 g | |
| Colour | Black | Black | White |
| SOUND QUALITY | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Foldable | - | Yes | Sennheiser HD 450BT can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.0 | |
| 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 | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 450BT are equipped with active noice cancellation. |
| Noise Isolating | Yes | - | Sennheiser HD 4.20s are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | - | 18 - 22000 Hz | |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Max Sound Pressure | - | 108 dB |
| MICROPHONE | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Omni-directional | Beamforming | |
| Frequency Response | - | 80 - 6000 Hz | |
| Sensitivity | -44 dBV/Pascal | - | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Controls | 1-button remote | - |
|---|
| CABLE | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Cable Type | - | Audio cable - detachable USB-C charge cable - detachable |
|
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Plated Connector | Gold | - |
| BATTERY AND CHARGING | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 30 hours | |
| Charging Time | - | 2 hours |
| CONNECTIONS | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | - |
|---|
| OTHERS | Sennheiser HD 4.20s | Sennheiser HD 450BT |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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