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- Sennheiser HD 400U Wired Earphones vs Sennheiser HD451 Wired Headphones
Sennheiser HD 400U Wired Earphones vs Sennheiser HD451 Wired Headphones comparison
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| key specs | ||||
| Headphone Type | In-Ear | Over-Ear | ||
| Microphone | Yes | No | ||
| Connectivity | Wired | Wired | ||
| Type | Earphones | Headphones | ||
| Colour | - | Black | ||
| general | ||||
| Brand | Sennheiser | Sennheiser | ||
| Model | HD 400U Wired Earphones | HD451 Wired Headphones | ||
| Release date | April 22, 2026 | January 1, 2017 | ||
| Type | Earphones | Headphones | ||
| Headphone Type | In-Ear | Over-Ear | ||
| Connectivity | Wired | Wired | ||
| Colour | - | Black | ||
| Model Number | - | HD451 | ||
| product details | ||||
| Microphone | Yes | No | ||
| Cord Length (Metres) | 1.2 | 1.2 | ||
| Driver Type | Dynamic | - | ||
| Driver Size (mm) | 9.7 | - | ||
| Weight (g) | 14.30 | 380.00 | ||
| Connector Size | - | 3.5mm | ||
| sound features | ||||
| Impedance (Ohms) | 28 | 32 | ||
| Active Noice Cancellation | No | - | ||
| Frequency Response Range | 17Hz-20,000Hz | 20Hz-20,000Hz | ||
| Sensitivity (dB) | - | 108 | ||
| connectivity features | ||||
| Bluetooth | - | No | ||
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