Sennheiser HD 400 Pro Black Studio Reference Headphones

Professional Reference. Accessible Price Point.

The Sennheiser HD 400 PRO brings professional open-back monitoring to the next generation of producers, engineers, and audiophiles. Built on Sennheiser's decades of transducer expertise, the HD 400 PRO delivers a natural, spacious soundstage with the accuracy you need to make confident mix decisions — at home, in the studio, or anywhere you create.

Slip them on and step into your mix. The open-back design breathes life into your stereo field, letting you hear depth, width, and placement with remarkable clarity. Whether you're tracking vocals, editing, or doing a final mix pass, the HD 400 PRO keeps your ears honest.

Key Features

• Open-back, circumaural design for a natural, reference-grade soundstage
• 42 mm transducer with low distortion for accurate, detailed reproduction
• Frequency response: 6 Hz – 38,000 Hz
• Impedance: 120 Ω | SPL: 110 dB (1 kHz / 1 Vrms)
• Detachable cables: 3 m straight cable + 6 m coiled cable included
• Two sets of ear pads: velour and leatherette for comfort versatility
• Adjustable headband with soft padding for extended wear
• Foldable design for easy storage

In the Box

• Sennheiser HD 400 PRO headphones (Black)
• 3 m straight cable
• 6 m coiled cable
• Velour ear pads (pre-installed)
• Leatherette ear pads
• 6.35 mm (¼") adapter