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Black open-back over-ear headphones with large ring-radiator drivers, metal headband, microfibre ear pads, 300 ohms

Sennheiser

Sennheiser HD 800 S headphone, 56mm ring radiator, 300 ohms, black

SKU CH-NJ59-C4MMC

Open-back reference headphones with 56mm ring-radiator drivers, 300-ohm impedance and a balanced XLR4 cable included

  • TypeOver the Ear
  • ColorBlack
  • Driver Unit40mm
  • Frequency Response4 - 51,000 Hz (-10 dB)
  • THD< 0.02 % (1 kHz 1 Vrms)
  • Input Impedance300 ohms
  • Open-back design creates a natural, spacious soundstage
  • 56 mm ring-radiator drivers deliver rich detail with very low distortion
  • Innovative absorber technology smooths frequency peaks for accurate reproduction
  • Angled ear-cup geometry directs sound waves for immersive spatial imaging
  • Includes both 6.3 mm single-ended and 4.4 mm balanced cables

Reference Class Audiophile Headphones

The Sennheiser HD 800 S is an open-back, circumaural headphone built for critical listening. Its 56mm ring radiator transducers and absorber technology reduce resonance peaks across a 4–51,000 Hz response. A 300-ohm impedance demands a dedicated amplifier to reach reference volume levels.

Suited for Dedicated Desktop Listening

This model serves buyers who prioritise spatial accuracy and low distortion (<0.02% THD) in a stationary setup. It is not for portable use, commuters needing isolation, or listeners without a high-quality headphone amplifier capable of driving 300 ohms properly.

Build Integration and Cabling

The package includes a 9.84 ft single-ended 6.3mm cable and a balanced XLR4 cable, freeing you from sourcing aftermarket leads. The lightweight 330g frame with damped headband and microfibre pads supports extended sessions, while the open-back design requires a quiet room to prevent sound leakage.

Highlights

  • Open-back design creates a natural, spacious soundstage
  • 56 mm ring-radiator drivers deliver rich detail with very low distortion
  • Innovative absorber technology smooths frequency peaks for accurate reproduction
  • Angled ear-cup geometry directs sound waves for immersive spatial imaging
  • Includes both 6.3 mm single-ended and 4.4 mm balanced cables

Specifications

BrandSennheiser
ModelHD800S
Part Number506911
TypeOver the Ear
ColorBlack
Driver Unit40mm
Frequency Response4 - 51,000 Hz (-10 dB)
THD< 0.02 % (1 kHz 1 Vrms)
Input Impedance300 ohms
Connector6.3mm
Ear CouplingCircumaural
Cord Length9.84 ft.
Weight330g
CompatibilityUniversal
FeaturesFurther optimised reference class in wired headphones
Open, circum-aural dynamic stereo headphones
Enhanced sound reproduction achieved through absorber technology
Additional cable with balanced XLR4 connector
High-class matt black metal parts
Natural hearing experience - realistic and natural sound field with minimal resonance
Biggest transducers ever used in headphones including new innovative dynamic transducer design
Uncovered earcups for enhanced acoustics
Handcrafted ear pads, made of high-quality microfiber fabric
Metal headband with an inner damping element
Specially tuned ba
Package ContentsHD 800 S
Cable with 6.3mm jack connector
Balanced cable with XLR4 connector
Microfibre cleaning cloth
Manual
USB flash drive

Questions about this item

Do I need a dedicated headphone amplifier to drive the 300 ohm impedance?

Yes, the 300 ohm input impedance requires a dedicated headphone amplifier or high-output audio interface to reach proper listening levels and control the 56mm ring radiator drivers effectively.

Will the included 6.3mm and XLR4 cables connect directly to my vintage receiver's 1/4-inch headphone jack?

The 6.3mm terminated cable plugs straight into a vintage 1/4-inch headphone jack, while the balanced XLR4 cable requires a matching XLR4 headphone output or adapter not supplied in the box.

How can I verify the <0.02% THD spec is being achieved after setup?

Play a 1 kHz test tone at 1 Vrms through a calibrated measurement microphone; distortion readout should stay below 0.02% if the amplifier, cables and headphones are all functioning correctly.

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