Sennheiser HD800
Sennheiser HD 800 open-back circumaural headphones, fitted with large-diameter transducers and a dedicated balanced cable, for demanding wired Hi-Fi listening.
Description
The Sennheiser HD 800 is an open-back circumaural headphone designed for wired Hi-Fi listening at home. It belongs to the category of open headphones, intended to prioritise sound reproduction over isolation, for stationary use in front of a hi-fi system or headphone amplifier.
The model stands out for its very large transducers, said to be among the biggest ever fitted to a headphone, combined with a design considered innovative at the time of its release. The earcups are described as bare, meaning without any visible grille or covering around the transducer, a choice that contributes both to the headphone's distinctive aesthetic and to its acoustic behaviour.
The cable supplied with the HD 800 uses a special low-capacitance balanced design, with impedance matching and high-precision connectors. This type of cabling aims to limit losses and signal alteration on the link between the source and the headphones.
These headphones are aimed at music lovers equipped with a wired Hi-Fi setup capable of driving them properly, seeking open headphones for seated listening in a quiet environment, rather than portable or on-the-go use.
Technical specifications
| Type | Dynamic, open-back |
| Frequency response | 6 - 51000 Hz |
| Impedance | 300 ohms |
| Sensitivity | 102 dB (1 Vrms) |
| Rated power | 500 mW per EN 60-268-7 |
| Total harmonic distortion | ≤ 0.02 % (1 kHz, 1 Vrms) |
| Connections | Impedance-matching cable, special low-capacitance balanced design |
What to check before buying used
On this model, the bare earcups without grilles leave the transducers exposed to knocks and dust: check for any fingerprints or deformation on the diaphragms. The suspension headband and earpads are wear parts that are frequently replaced, and their condition and origin (genuine Sennheiser or compatible parts) should be confirmed. The low-capacitance balanced cable, with its proprietary connectors, should be tested channel by channel to rule out any loose contact or weakened soldering.
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