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Black over-ear headphones with open metal mesh grilles, padded headband and circumaural ear cups, detachable cable visible

Sennheiser

Sennheiser HD 600 Headphones

SKU CH-E7AB-D5HER

Open-back circumaural headphones with 42 mm drivers, 12–40.5 kHz response, 300-ohm impedance and detachable OFC cable for reference listening

  • TypeOver the Ear
  • ColorBlack
  • Frequency Response12-40.5KHz
  • Input Impedance300 ohms
  • Sensitivity97 dB/mW
  • Connector3.5mm
  • Audiophile-grade clarity from computer-optimised transducer minimising distortion
  • Natural open-back soundstage via acoustically transparent earcups and acoustic silk
  • Fatigue-free comfort with lightweight design and plush circumaural pads
  • Precise transient response from ultralight aluminium voice coils
  • Durable detachable Kevlar-reinforced OFC copper cable with 3.5 mm connector

Reference headphones for critical listening

The Sennheiser HD 600 is an open-back, circumaural headphone built for engineers and audiophiles who need an impartial reference. Its 42 mm driver and 38 mm diaphragm are computer-optimised to keep total harmonic distortion at 0.1% across a 12–40,500 Hz range. The 300-ohm impedance and 97 dB/mW sensitivity demand a capable amplifier to reach full potential.

Thermals noise and power draw

Passive acoustic silk manages airflow inside the open metal-mesh earcups, so the cups stay cool during long sessions without any active cooling. The design adds no electronic self-noise and draws zero power of its own; only the upstream amplifier determines overall consumption. Ultralight aluminium voice coils keep transient response fast and handling noise low.

Upgrade path and when it matters

The detachable oxygen-free copper cable with a 3.5 mm connector replaces worn leads without soldering and lets owners swap terminations for balanced gear. Buyers who need closed-back isolation, wireless convenience, or a lower-impedance load for portable players will not find those traits here. The jump from consumer-grade headsets is worth it when mix verification, mastering QC, or component evaluation demands a transparent, fatigue-free reference.

Highlights

  • Audiophile-grade clarity from computer-optimised transducer minimising distortion
  • Natural open-back soundstage via acoustically transparent earcups and acoustic silk
  • Fatigue-free comfort with lightweight design and plush circumaural pads
  • Precise transient response from ultralight aluminium voice coils
  • Durable detachable Kevlar-reinforced OFC copper cable with 3.5 mm connector

Specifications

BrandSennheiser
ModelHD-600
TypeOver the Ear
ColorBlack
Frequency Response12-40.5KHz
Input Impedance300 ohms
Sensitivity97 dB/mW
Connector3.5mm
Ear CouplingCircumaural

Questions about this item

How do I connect the detachable 3.5 mm cable to the HD 600 and which step do people miss?

Plug the 3.5 mm connector into the left earcup socket until it clicks, then route the Kevlar-reinforced OFC cable away from the headband hinge to avoid strain on the joint.

Which parts of the HD 600 will need replacement after extended use?

The velour ear pads and the detachable OFC copper cable are the wear items; both are user-replaceable and available directly from Sennheiser.

At what impedance does the HD 600 demand the most amplifier voltage during long listening sessions?

The 300 ohm nominal impedance means the headphones draw very little current but require an amplifier that can swing sufficient voltage without clipping at the 97 dB/mW sensitivity.

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