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HEADPHONES

Sennheiser HD 600

grey finish · 300 ohm · standard 3 m stereo cable · Sennheiser part 508824

Acoustic design
Open-back
Wearing style
Over-ear (circumaural), open-back dynamic headphones
Nominal impedance
300 ohm

The HD 600 is an open-back, over-ear dynamic headphone. Sennheiser describes a 42 mm driver with a 38 mm diaphragm and aluminium voice coils, rated 12–40,500 Hz (−10 dB) at 300 ohms. It has a detachable 3 m cable and replaceable velour ear pads.

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Price history · US
eBay USnew · USD

Item price · same listing and exact model

Latest check$349.95
Lowest shown$299.95

20 observed days · 28 Sept–17 Oct

eBay US observed item prices20 observed days. Last checked price per UTC day. Missing dates break the line. Use Explore dates or the table for exact values.
$349.9517 Oct, 12:05 UTC

Last recorded item price per UTC day. Delivery and tax are excluded. Gaps mean no recorded check. Past prices do not confirm current availability; this is not a market-wide price history.

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Exact listing · eBay US · USD
Checked (UTC)Item price
$499.95
$499.95
$499.95
$499.95
$499.95
$499.95
$499.95
$499.95
$349.95
$349.95
$299.95
$349.95
$349.95
$349.95
$349.95
$349.95
$349.95
$349.95
$349.95
$349.95

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THE ACTUAL PRODUCT
Sennheiser HD 600 grey open-back headphones, blue HD 600 badge and detachable cable; manufacturer model illustration
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with Sennheiser HD 660S2
Explore alternativesUpgrade from this product

Specifications checked 11 Sept 2026Manufacturer specifications, not a hands-on test.

Options worth comparing

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The nearest checked headphones by key specifications, with what differs from the Sennheiser HD 600. The first matches the Compare button above.

The useful part.

Key strengths

The detachable 3 m cable and velour ear pads can be replaced, and optional 4.4 mm and XLR-4 balanced cables are available for balanced amplifiers.

Manufacturer source Manufacturer source
The checks that matter.

Before you buy

At 300 ohms with a rated 97 dB SPL at 1 kHz / 1 V rms, check that your amplifier or audio source can drive the headphones properly.

Manufacturer source Manufacturer source

The open-back design leaks sound and lets outside noise in. Sennheiser's pages disagree on whether the cable ends in a 3.5 mm or 6.35 mm plug, so check the listing.

Manufacturer source Manufacturer source
Every specification. With its source.

Full specifications

Suggest a correctionOur publishing standard

Exact configuration: 508824 · grey finish · 300 ohm · standard 3 m stereo cable

24 specifications in 5 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.

Design & fit

6 items
Acoustic design
Open-backSource
Wearing style
Over-ear (circumaural), open-back dynamic headphonesSource
Weight
260 g

Approximate, without the cable.

Source
Replaceable parts
Detachable cable and replaceable ear pads

Replacement procedures are in the manual; spare-part availability varies.

Source
Ear pads
Velour ear pads; replaceable

Replacement procedure shown in the manual.

2 sources
Rated contact pressure
Approximately 6.0 N ±1.0 N

Nominal clamping force; individual fit and comfort can differ.

Source

Connections & battery

5 items
Wired / wireless connections
Wired analogue stereo; detachable 3 m cable and supplied adapter support 3.5 mm and 6.35 mm connections

Sennheiser's manual and UK page disagree on which plug is native; see Supplied plug configuration.

2 sources
Battery life
Not listed by the manufacturer

The reviewed exact sources do not explicitly establish battery life or that no battery is required for operation. A wired/dynamic audio path, omitted charger or Battery included N is not an explicit operating-power requirement.

Source
Included cable length
3 m

Length of the supplied cable.

Source
Supplied plug configuration
Conflicting sources

Sennheiser's manual and UK specification table list a 3.5 mm plug with a 6.35 mm adapter, while the UK page's connection text describes a 6.3 mm plug with a 3.5 mm adapter. Check the listing for the supplied plug. · Needs a matching headphone output; the 4.4 mm balanced cable needs a balanced output.

2 sources
Included and optional cables
Detachable 3 m unbalanced cable included; 4.4 mm and XLR-4 balanced cables optional

Optional cables are sold separately; balanced cables need a balanced headphone output.

2 sources

Audio specifications

9 items
Nominal impedance
300 ohm

Nominal impedance; check that your amplifier or audio source can drive this load.

Source
Rated sensitivity
97 dB SPL at 1 kHz, 1 V rms

Rated at 1 kHz with 1 V rms; not directly comparable with dB/mW ratings.

Source
Rated frequency range
12–40,500 Hz (−10 dB)Source
Driver construction
Open dynamic 42 mm driver with a 38 mm diaphragm and aluminium voice coils

Sennheiser gives 42 mm for the driver and 38 mm for its diaphragm; it does not say how the 42 mm figure is measured.

Source
Frequency equalisation
Diffuse-field equalisedSource
Rated total harmonic distortion
≤0.1% at 1 kHz, 1 V rms (DIN 45500)

Rated to DIN 45500; other models use different test levels, so compare with care.

2 sources
Rated long-term input power
0.2 W under DIN 45580

Rated to DIN 45580; the maximum input the headphones can handle, not the amplifier power they need.

Source
Published acoustic changes
Not listed by the manufacturer

Sennheiser does not describe an acoustic revision for the HD 600.

2 sources
Manufacturer sub-bass claim
Not listed by the manufacturer

Sennheiser makes no sub-bass claim for the HD 600.

2 sources

Calls & noise control

2 items
Active noise cancellation
Not listed by the manufacturer

The reviewed exact sources do not explicitly establish active noise cancellation absence. Preserve separately sourced acoustic design and passive attenuation; they cannot turn omitted ANC into a false capability.

Source
Microphone
Not listed by the manufacturer

The reviewed exact sources do not explicitly establish microphone absence. Omission from a package or technical inventory, a stereo audio connector, and a without-remote statement do not establish microphone=false.

Source

Operating limits

2 items
Static magnetic field at the surface
1.8 mT

Static magnetic field at the headphone surface.

2 sources
Operating temperature
−10 °C to +55 °CSource
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