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THE ACTUAL PRODUCT
Black Sennheiser HD 800 S open-back headphones with ring-radiator earcups and detachable cable connectors visible
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HEADPHONES · LOOK CLOSER

Sennheiser HD 800 S

Black · HD 800 S · 506911

Open-back wired headphones with detachable cables and a 300-ohm nominal load.

Reviewed 6 Sept 2026Manufacturer specifications, not a hands-on test.
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WHAT IT BRINGS

The useful part.

Separate 6.35 mm and balanced 4.4 mm cables support compatible headphone outputs.

Manufacturer source
BEFORE YOU CHOOSE

The checks that matter.

Check the source's headphone output and connector; these are open-back headphones, not an isolation-focused closed design.

Manufacturer source
NOTHING HIDDEN IN THE SMALL PRINT

Every specification.
With its source.

Our publishing standard
Wearing style
Open-back, dynamic, over-ear
Conditions & context

Manufacturer specification

Source
Acoustic design
Open-back
Conditions & context

Manufacturer specification

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Wired / wireless connections
Wired; detachable 6.35 mm unbalanced and 4.4 mm balanced cables
Conditions & context

Manufacturer specification

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Microphone
No
Conditions & context

Manufacturer specification · Stock headphone cables carry left/right audio only, as shown in the manual's pin assignment; no microphone path.

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Active noise cancellation
No
Conditions & context

Manufacturer specification · Passive open-back operation in the manual, not active noise cancellation. Absorber technology is an acoustic feature, not ANC.

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Battery life and conditions, or not applicable
Not required: passive wired headphones powered by the source's audio output
Conditions & context

Manufacturer specification · Manual connection and operation sections: analogue audio cables, no charging or battery operation.

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Weight
330 g
Conditions & context

Manufacturer specification · Approximately, without connection cable, per instruction manual.

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Nominal impedance
300 ohm
Conditions & context

Manufacturer specification

Source
Cable length
3 m
Conditions & context

Manufacturer specification

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Driver diameter
56 mm
Conditions & context

Manufacturer specification · Ring-radiator transducer diameter; not an audio-quality score.

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Cable arrangement
Detachable connectors at both earcups
Conditions & context

Manufacturer specification · Follow the manual's connector alignment instructions.

Source 1 Source 2
PUT IT IN PERSPECTIVE

A choice needs a contender.

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