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Key Features
Audio engineers and music producers looking for professional-grade studio reference monitoring headphones will be thrilled with the Sennheiser HD 400 PRO, a pair of open-back circumaural headphones designed for mixing and other pro audio applications. With a frequency response of 6 Hz to 38 kHz, these headphones provide clear reproduction of audio.
The dynamic drivers utilize a specialized polymer blend in its diaphragm as well as a high-powered magnet to drive the system. The damping system manages ventilation, which allows for deeper bass while mitigating the distortion that otherwise impacts clarity. The open earcups and angled transducers allow for a wide and transparent soundstage, recreating the optimal listening position found in high-end recording studios.
The lightweight HD 400 PRO sports velour earpads, which provide the ultimate comfort for long listening sessions. A single-ended, coiled cable with a 3.5mm plug provides you the freedom to operate. A straight cable and a 3.5mm to 1/4" adapter are also included.
Headphone
| Earpiece Design | Over-Ear (Circumaural), Open-Back |
| Earpiece Connection / Wearing Style | Headband |
| Foldable | No |
| Driver Type | Dynamic |
| Impedance | 120 Ohms |
| Active Noise Cancellation | No |
Performance
| Frequency Response | 6 Hz to 38 kHz |
| Resonant Frequency | None |
| Maximum Sound Pressure Level (SPL) | 110 dB at 1 kHz / 1 Vrms |
| Total Harmonic Distortion (THD) | 0.05% |
Wired Connectivity
| Audio Connector to Source | 1 x 1/8" / 3.5 mm TRS Male Straight |
| Connector Plating | Gold |
| Adapter (Included) | 1/4" TRS |
| Cable Design | Single-Sided |
| Audio Connector to Earpiece | 1 x 1/8" / 3.5 mm Male |
| Cable Length | 9.8' / 3 m (Coiled Cable) 5.9' / 1.8 m (Straight Cable) |
| Cable Color | Black |
Environmental
| Operating Temperature | 5 to 131°F / -15 to 55°C |
| Storage Temperature | -67 to 158°F / -55 to 70°C |
| Operating Humidity | 90% |
Physical
| Color | Black |
| Water Resistance | None |
| Weight | 8.5 oz / 240 g (without Cable) |
Packaging Info
| Package Weight | 1.53 lb |
| Box Dimensions (LxWxH) | 10.6 x 8 x 4.4" |