by Lasse Eilers | Approximate reading time: 2 Minutes
Sennheiser HD 400 PRO

Sennheiser HD 400 PRO  ·  Source: Sennheiser

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Sennheiser has announced the HD 400 PRO reference headphones. With an open-back construction and a wide frequency response, the HD 400 PRO are designed to deliver a natural and precise sound stage for editing and mixing in the studio.

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Sennheiser HD 400 PRO

The HD 400 PRO are the first open-back studio headphones in Sennheiser’s PRO Line. The manufacturer says that their wide and linear frequency response of 6 to 38,000 Hz helps to create mixes that transfer accurately to listeners.

The transducers of the circumaural headphones feature diaphragms made from a special polymer blend. According to Sennheiser, these work together with powerful driver magnets to deliver a clear and well-defined bass range, as well as nuanced harmonics. The transducers sit at a slight angle, which is meant to recreate the typical triangular listening position using monitor speakers. The manufacturer also says that the open-back design ensures a natural propagation of sound for a wide and spacious sound stage and a neutral and transparent reproduction of sound.

For increased wearing comfort during long mixing sessions, the HD 400 Pro feature soft velour earpads and an ultra-light frame. The headphones come with a 3 meter coiled cable and a 1.8 meter straight cable.

According to Sennheiser, the HD 400 Pro can also be used with headphone monitoring plug-ins by Dear Reality, which use spatial audio technology to create a virtual mix room. The headphones are already integrated into dearVR MIX; an integration into dearVR MONITOR is expected to be released by the end of this year.

Sennheiser HD 400 PRO

HD 400 PRO

Technical specifications

  • Acoustic principle: dynamic, open
  • Ear coupling: circumaural
  • Frequency response: 6 – 38,000 Hz
  • THD: < 0.05% (at 1 kHz, 90 dB SPL)
  • Impedance: 120 Ω
  • Sound pressure level: 110 dB (1 kHz, 1 Vrms)
  • Connector: 3.5 mm (1/8”) jack with adapter to 6.3 mm (1/4”) jack
  • Weight: 240 g (without cable)

Price and availability

The Sennheiser HD 400 PRO headphones are now available at retailers such as Thomann* for around €249.

Sennheiser HD-400 Pro

Sennheiser HD-400 Pro

Price225.00 €

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More information about Sennheiser

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