Item #1560830 Model #700047

Sennheiser HD 400 PRO Studio Reference Headphones Standard


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Sennheiser's HD 400 PRO gives you all you need to hear.

Sennheiser HD 400 PRO Studio reference headphones were specially engineered to suit the needs of working musicians, engineers and producers. When working at home or in the studio, you need your mix to sound as it does when your listeners hear it. The HD 400 PRO reference headphones are your everyday tool to get the job done. Its open-back design provides a natural and accurate listening experience for fine-tuning your signature sound.

The core of the HD 400 PRO is the 120-ohm transducer developed by Sennheiser engineers, featuring a specialized polymer blend in its diaphragm. The drive magnet offers high power while its damping system manages ventilation—this combination yields deeper bass while mitigating the distortion that otherwise impacts clarity—a difference listeners will appreciate. This makes the HD 400 PRO a precise monitoring tool which reveals your mix in every detail. Velour ear pads and a distinct lightweight design provide the comfort you need during long sessions. The robust housing endures everyday wear and tear regardless of your application, whether editing, mixing or mastering. A single-sided and coiled cable gives you the freedom to operate. For convenience, a straight cable is also included. In addition, open ear cups and angled transducers allow for a wide and transparent soundstage, recreating the optimal listening position found in high-end recording studios. The HD 400 PRO is a true reliable companion for those who put quality and precision above all else.
  • Ear coupling: Circumaural
  • Operating principle: Dynamic, open
  • Primary application: Studio reference
  • Secondary application: Home use
  • Frequency response: 6Hz–38kHz
  • SPL: 110 dB
  • Noise cancelling: No
  • Weight: 0.53 lb. (without cable)
  • Cable type: Coiled and straight
  • Cable Length: 118.11" (coiled cable), 70.87" (straight cable)
  • Connector: 1/8" with 1/4" adapter
  • Built-in mic: No
  • Bluetooth connectivity: No


  • A professional‘s tool with neutral sound reproduction
  • Lightweight design for all-day usage
  • Single-sided, coiled cable allows freedom to operate
  • For convenience, a straight cable is also included
  • Angled transducers designed for low distortion at high SPL provide a spacious and accurate soundstage