Detailed comparison and review of Sennheiser HD 4.50 BTNC Wireless and Sennheiser HD 820. 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 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - wired | |
|---|---|---|---|
| Weight | 238 g | 360 g | Sennheiser HD 4.50 BTNC Wireless are lighter than Sennheiser HD 4.50 BTNC Wireless headphones. |
| Earpad Material | - | Microfibre | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Foldable | Yes | - | Sennheiser HD 4.50 BTNC Wireless can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Active Noise Cancelling | Yes | - | Sennheiser HD 4.50 BTNC Wireless are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - | |
| Noise Isolating | - | Yes | Sennheiser HD 820 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 6 - 48000 Hz | Sennheiser HD 820 offer a larger frequency range than Sennheiser HD 4.50 BTNC Wireless. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 113 dB | 103 dB/Vrms | Sennheiser HD 4.50 BTNC Wireless have higher sensitivity than Sennheiser HD 820. |
| Impedance | 18 Ohm | 300 Ohm | |
| Magnet Material | Neodymium | - | |
| Features | Bluetooth aptX technology | - |
| MICROPHONE | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Controls | Power on/off, volume control, answer/end, hold, play/pause, next/previous track, reject call, redial | - |
|---|
| CABLE | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Cable Type | Headphones cable - detachable - L shaped - 1.4 m Micro-USB charge cable - detachable |
Headphones cable - OFC - 3 m | |
|---|---|---|---|
| Cable Length | 1.4 m | 3 m | |
| Detachable Cable | Yes | - | |
| Plated Connector | Gold | Gold |
| BATTERY AND CHARGING | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | - | |
|---|---|---|---|
| Battery Capacity | 600 mAh | - | |
| Battery Life | 25 hour(s) | - | |
| Charging Time | 2 hour(s) | - |
| CONNECTIONS | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Sennheiser HD 4.50 BTNC Wireless | Sennheiser HD 820 |
|---|
| Included Accessories | Carrying case, micro-USB charging cable | USB flash drive, microfibre cleaning cloth, 4.4 mm Pentaconn stereo jack plug, XLR-4 connector |
|---|
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