Sennheiser HD-400-PRO Open-Back Professional Studio Headphones

Sennheiser’s HD 400 Pro open-back professional studio headphones deliver reference-grade performance from a lightweight design with a stunning soundstage and signature Sennheiser audio quality.

When critical decisions are based on what you hear, make sure you’re hearing the truth. Sennheiser’s HD 400 Pro headphones provide an open, natural, and accurate reproduction that allows you to trust your ears. A professional tool for monitoring, mixing, and mastering, the HD 400 Pros present a frequency range that’s honest across the board without an overcompensated low end. These phones let you hear what’s there, nothing more, nothing less, just accuracy.

Long sessions are the norm when you’re mixing and mastering, so Sennheiser engineered the HD 400 Pros to be lightweight with an adjustable headband and plush velour ear pads. Coupled with the open-back design, Sennheiser’s attention to comfort reduces fatigue both physically and audibly, allowing you to dial in the mix you want, no matter how long it takes.

Sennheiser HD-400-PRO Includes:

• HD 400 PRO Studio Reference Headphone
• 3 m coiled cable with 3.5 mm jack plug
• 3.5 mm jack plug to 6.3 mm adapter
• 1.8 m straight cable
• Quick Guide
• Safety Guide

Sennheiser HD-400-PRO Features:

• 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’s provide a spacious and accurate soundstage

Sennheiser HD-400-PRO Specifications:

• Impedance: 120 Ω
• Frequency response: 6 Hz to 38 kHz (-10 dB)
• Sound pressure level (SPL): 110 dB (1 kHz / 1 V RMS)
• THD, total harmonic distortion: < 0.05 % (1 kHz / 90 dB SPL)
• Ear coupling: circumaural
• Jack plug: 3.5 mm jack plug with 6.3 mm adapter
• Weight: 240 g
• Storage temperature: –55 °C to +70 °C (–67 °F to 158 °F)
• Operating temperature: –15 °C to +55 °C (5 °F to 131 °F)
• Operating relative humidity: ≤ 90 %
• Accoustic principle: dynamic, open
• Ear pad material: Velour