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HEADPHONES · YOUR NEXT FACE-OFF

Sennheiser HD 490 PRO vs Sennheiser HD 400 PRO

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

Sennheiser HD 490 PRO

700286 · HD 490 PRO (standard, not PRO Plus) · wired

Sennheiser HD 490 PRO open-back studio headphones, front view
Full product profile Official image
Exact model & source notes

The HD 490 PRO (article 700286) is Sennheiser's open-back, around-ear wired studio reference headphone. It has a 38 mm dynamic transducer, a rated 130 Ω impedance, two interchangeable ear-pad sets for mixing and producing, a detachable cable that can plug into either ear cup, and braille-guided L/R ear cups with grooved pads for eyeglass wearers.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications
WHICH SUITS YOU?

Choose the HD 490 PRO for

  • Higher stated nominal impedance: 130 ohm vs 120 ohm

Choose the HD 400 PRO for

  • Lower stated nominal impedance: 120 ohm vs 130 ohm
Built from verified specifications that differ. Not a rating or a recommendation.
See the 10 verified differences
THE CONTENDER

Sennheiser HD 400 PRO

700047 · HD 400 PRO · wired

Sennheiser HD 400 PRO open-back studio headphones in black lying on their side, showing the whole padded headband and attached coiled cable
Full product profile Official image
Exact model & source notes

The HD 400 PRO (article 700047) is Sennheiser's open-back, around-ear wired studio headphone. It uses angled 120 Ω dynamic transducers with a polymer-blend diaphragm, velour ear pads and a detachable single-sided cable, and both a 3 m coiled and a 1.8 m straight cable come in the box. It weighs 240 g without the cable. Sennheiser lists a two-year warranty.

Specifications checked 27 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

HD 490 PRO UK & US retailers

UK
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US
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UK & US price history: no verified listing yet

HD 400 PRO UK & US retailers

UK
Search Amazon UKSearch eBay UK
US
Search Amazon USSearch eBay US

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison
  • Manufacturer facts for the exact models shown. Not a quality rating or a test result.
  • “Different” means the known values differ, not that one is better.
  • Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
FEATURES SIDE BY SIDE8 topics

Yes and No describe the listed feature. Missing evidence stays unverified.

SELECTED TOPIC
01 / 08

Impedance

Nominal electrical load, not sound quality or loudness. Output capability and headphone sensitivity matter together; impedance alone cannot decide whether an amplifier is needed.

Explore the full specifications

Start with your listening environment. Open and closed earcups suit different surroundings. A closed back is not the same as active noise cancellation. Check the exact cable and headphone output. We do not turn impedance, driver size or unpaired lab results into a sound-quality score.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

10 verified differences, most decision-relevant first. 1 is also drawn in Visual facts above. Missing information stays separate.

Wired / wireless connections

Sennheiser HD 490 PROWired; detachable 1.8 m cable with 3.5 mm plug and supplied 6.3 mm adapter; right and left ear-cup jacks
Sennheiser HD 400 PROWired; detachable single-sided cable: 3 m coiled cable with 3.5 mm jack plug and a 1.8 m straight cable supplied, plus a 3.5-to-6.3 mm adapter
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Replacement 1.8 m, 3 m, balanced and coiled cables are sold separately as accessories.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

Manufacturer specification · Replacement coiled and straight cables are listed as spare parts.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Check the exact configuration and source conditions for your use.

Nominal impedance

In Visual facts
Sennheiser HD 490 PRO130 ohm
Sennheiser HD 400 PRO120 ohm
Sources

Check the exact configuration and source conditions for your use.

Driver construction

Sennheiser HD 490 PRO38 mm dynamic transducer
Sennheiser HD 400 PROAngled 120-ohm dynamic transducers with a polymer-blend diaphragm
Sources
Sennheiser HD 400 PRO

Manufacturer specification · Sennheiser does not state the transducer diameter on the pages and documents read.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Check whether the diameter describes the complete transducer or only its diaphragm. Different labels and driver sizes do not establish better sound.

Cable arrangement

Sennheiser HD 490 PRODetachable 1.8 m cable; right and left ear-cup jacks, so the cable can be connected on either side
Sennheiser HD 400 PRODetachable, single-sided cable; coiled 3 m and straight 1.8 m cables supplied
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Sennheiser: 'Right and left ear jacks with detachable cable easily adapts to any studio configuration'. Only one 1.8 m cable is in the standard 700286 box.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data

Check the exact configuration and source conditions for your use.

Rated total harmonic distortion

Sennheiser HD 490 PRO<0.2% at 1 kHz, 100 dB SPL
Sennheiser HD 400 PRO<0.05% at 1 kHz, 90 dB SPL
Sources

These published limits can use different input voltages, loudness levels and standards. They cannot establish lower distortion in matched listening conditions.

Ear pads

Sennheiser HD 490 PROTwo washable, replaceable sets supplied: mixing pads and producing pads
Sennheiser HD 400 PROVelour; replaceable
Sources

Check the exact configuration and source conditions for your use.

Show 4 more verified differences

Rated frequency range

Sennheiser HD 490 PRO5–36,100 Hz (−10 dB)
Sennheiser HD 400 PRO6–38,000 Hz (−10 dB)
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The specification sheet states 36,100 Hz; the product page rounds the upper limit to 36,000 Hz.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)

Range endpoints need their stated threshold. They do not describe response flatness or prove better bass, detail or sound quality.

In the box

Sennheiser HD 490 PROHD 490 PRO headphones, 3.5 mm to 6.3 mm adapter, 1.8 m cable, mixing ear pads, producing ear pads, quick guide, safety guide
Sennheiser HD 400 PROHD 400 PRO headphones, 3 m coiled cable with 3.5 mm jack plug, 3.5 mm to 6.3 mm adapter, 1.8 m straight cable, quick guide, safety guide
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The HD 490 PRO Plus (700287) adds a 3 m cable, an extra headband pad and a case; it is a separate article.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)

Check the exact configuration and source conditions for your use.

Rated sensitivity

Sennheiser HD 490 PRO105 dB SPL (1 kHz, 1 Vrms); 96 dB SPL (1 kHz, 1 mW)
Sennheiser HD 400 PRO110 dB SPL (1 kHz, 1 Vrms)
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Two references are given: per volt and per milliwatt.

Sennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

Manufacturer specification · The specification sheet states 110 dB (1 kHz / 1 V RMS). The UK page technical table labels the same conditioned figure Max. sound pressure level; this record preserves the voltage-referenced claim without independently certifying a maximum. The separate 120 dB feature statement gives no reference and is not assumed to use these test conditions.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Keep the frequency and voltage or power reference attached. Sensitivity describes output for an input, not sound quality; dB/V and dB/mW are different measures.

Weight

Sennheiser HD 490 PRO260 g
Sennheiser HD 400 PRO240 g
Sources
Sennheiser HD 400 PRO

Manufacturer specification · Without cable, per the specification sheet and manual; the product page gives the same 240 g without stating a basis.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)Sennheiser HD 400 PRO — instruction manual (09/2022)

A size or weight trade-off; it does not establish the better product.

Missing or non-comparable evidence (12)

Active noise cancellation

Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The complete exact sources establish an open dynamic wired design but do not explicitly negate active noise cancellation. Open construction and omission of ANC do not establish a false capability. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Microphone

In Visual facts
Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The complete exact sources list the headphone and accessories but do not explicitly establish absence of a microphone. An omitted microphone and a stereo headphone plug alone cannot become a sourced false capability. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery life

Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The retained exact sources do not explicitly establish battery life or that no battery is required for operation. Do not infer a not-applicable operating requirement from analogue/dynamic construction or a battery-included No row. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical data

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Accessibility features

Sennheiser HD 490 PROBraille-guided L/R ear cups; grooved ear pads for eyeglasses
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Sennheiser describes these as patented accessibility features.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data
Sennheiser HD 400 PRO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Coiled cable rated length

Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PRO3 m
Sources
Sennheiser HD 490 PRO

No source recorded for this side.

Sennheiser HD 400 PRO

Manufacturer specification · Separate supplied coiled cable. The source states 3 m but does not establish its relaxed/extended measurement basis. A 1.8 m straight cable is also supplied.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated power

Sennheiser HD 490 PRO300 mW (100 h, noise IEC 60268)
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The datasheet labels this 'Power rating'; the product page lists the same figure as 'Power consumption (Amp)'.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Maximum sound pressure level

Sennheiser HD 490 PRO128 dB SPL (1 kHz, 5% THD)
Sennheiser HD 400 PRONot verified
Sources
Sennheiser HD 400 PRO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Serviceability

Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PROReplaceable ear pads and components; ear pads, coiled cable and straight cable listed as spare parts
Sources
Sennheiser HD 490 PRO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Advertised SPL without stated reference

Sennheiser HD 490 PRONot verified
Sennheiser HD 400 PRO120 dB SPL
Sources
Sennheiser HD 490 PRO

No source recorded for this side.

Sennheiser HD 400 PRO

Manufacturer specification · UK page feature statement. Frequency, input voltage/power and measurement reference are not stated; the 120 dB claim is not labelled maximum. Do not compare it numerically with the specifically conditioned 110 dB at1 kHz/1 Vrms claim or use it as a comparable sensitivity/maximum-output input.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical data

Evidence is missing or conflicting on at least one side. This is not a verified difference.

3 shared fields have the same recorded value.

YOUR HEADPHONES. YOUR RULES.

Check against your must-haves

Feature matching for the features you select. It doesn’t rate sound or comfort.

Start with your listening setup.

Choose a starting point, then fine-tune your must-haves.

FINE-TUNE THE DETAILS

Your essentials.

These shortcuts select the features shown above. Check the fit against your own equipment and listening space.

A feature match describes the selected requirements. It doesn’t rate sound or comfort.

YOUR CHOICE

Sennheiser HD 490 PRO

Select a feature to check your fit.

YOUR CHOICE

Sennheiser HD 400 PRO

Select a feature to check your fit.

Feature matching, not a sound-quality score. The specification table links to the evidence for each feature.
WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Sennheiser HD 490 PRO

What it brings

  • Two washable, replaceable ear-pad sets come in the box, one for mixing and one for producing, so the listener can switch pad type without buying accessories.
    Manufacturer source Manufacturer source
  • Sensitivity is stated both per volt (105 dB SPL) and per milliwatt (96 dB SPL) at 130 Ω, which helps when matching it to an interface or headphone amplifier.
    Manufacturer source

What to check

  • It uses an open acoustic principle; Sennheiser presents the open-back design as providing natural ventilation and publishes no ambient-noise attenuation figure.
    Manufacturer source Manufacturer source
  • The standard 700286 box has one 1.8 m cable and no case. The 3 m cable, extra headband pad and case come with the separate PRO Plus article.
    Manufacturer source

Sennheiser HD 400 PRO

What it brings

What to check

COMPARE THE DETAILS

Full specifications

How we verify
25 of 25 specifications Sources in each row
Source-backed specifications for Sennheiser HD 490 PRO and Sennheiser HD 400 PRO
SpecificationSennheiser HD 490 PROSennheiser HD 400 PRO
Wearing style
Sources
Over-ear (circumaural), open-back wired studio headphonesOver-ear (circumaural), open-back wired studio headphones
WeightDifferent
Sources
Sennheiser HD 400 PRO

Manufacturer specification · Without cable, per the specification sheet and manual; the product page gives the same 240 g without stating a basis.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)Sennheiser HD 400 PRO — instruction manual (09/2022)
260 g240 g
Acoustic design
Sources
Open-backOpen-back
Ear padsDifferent
Sources
Two washable, replaceable sets supplied: mixing pads and producing padsVelour; replaceable
Serviceability
Sources
Sennheiser HD 490 PRO

No source recorded.

Not providedReplaceable ear pads and components; ear pads, coiled cable and straight cable listed as spare parts
Wired / wireless connectionsDifferent
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Replacement 1.8 m, 3 m, balanced and coiled cables are sold separately as accessories.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

Manufacturer specification · Replacement coiled and straight cables are listed as spare parts.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
Wired; detachable 1.8 m cable with 3.5 mm plug and supplied 6.3 mm adapter; right and left ear-cup jacksWired; detachable single-sided cable: 3 m coiled cable with 3.5 mm jack plug and a 1.8 m straight cable supplied, plus a 3.5-to-6.3 mm adapter
Cable arrangementDifferent
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Sennheiser: 'Right and left ear jacks with detachable cable easily adapts to any studio configuration'. Only one 1.8 m cable is in the standard 700286 box.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data
Detachable 1.8 m cable; right and left ear-cup jacks, so the cable can be connected on either sideDetachable, single-sided cable; coiled 3 m and straight 1.8 m cables supplied
Cable length
Sources
Sennheiser HD 400 PRO

Manufacturer specification · Supplied straight cable. A separate 3 m coiled cable is also supplied; the source does not specify whether its length is relaxed or extended.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
1.8 m1.8 m
Supplied plug and adapter
Sources
Sennheiser HD 490 PRO

No source recorded.

Not provided3.5 mm jack plug with 6.3 mm adapter
Coiled cable rated length
Sources
Sennheiser HD 490 PRO

No source recorded.

Sennheiser HD 400 PRO

Manufacturer specification · Separate supplied coiled cable. The source states 3 m but does not establish its relaxed/extended measurement basis. A 1.8 m straight cable is also supplied.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
Not provided3 m
Driver constructionDifferent
Sources
Sennheiser HD 400 PRO

Manufacturer specification · Sennheiser does not state the transducer diameter on the pages and documents read.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
38 mm dynamic transducerAngled 120-ohm dynamic transducers with a polymer-blend diaphragm
Driver diameter
Sources
Sennheiser HD 400 PRO

No source recorded.

38 mmNot provided
Rated frequency rangeDifferent
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The specification sheet states 36,100 Hz; the product page rounds the upper limit to 36,000 Hz.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
5–36,100 Hz (−10 dB)6–38,000 Hz (−10 dB)
Nominal impedanceDifferent
Sources
130 ohm120 ohm
Rated sensitivityDifferent
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Two references are given: per volt and per milliwatt.

Sennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

Manufacturer specification · The specification sheet states 110 dB (1 kHz / 1 V RMS). The UK page technical table labels the same conditioned figure Max. sound pressure level; this record preserves the voltage-referenced claim without independently certifying a maximum. The separate 120 dB feature statement gives no reference and is not assumed to use these test conditions.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
105 dB SPL (1 kHz, 1 Vrms); 96 dB SPL (1 kHz, 1 mW)110 dB SPL (1 kHz, 1 Vrms)
Rated total harmonic distortionDifferent
Sources
<0.2% at 1 kHz, 100 dB SPL<0.05% at 1 kHz, 90 dB SPL
Maximum sound pressure level
Sources
Sennheiser HD 400 PRO

No source recorded.

128 dB SPL (1 kHz, 5% THD)Not provided
Rated power
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The datasheet labels this 'Power rating'; the product page lists the same figure as 'Power consumption (Amp)'.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

No source recorded.

300 mW (100 h, noise IEC 60268)Not provided
Advertised SPL without stated reference
Sources
Sennheiser HD 490 PRO

No source recorded.

Sennheiser HD 400 PRO

Manufacturer specification · UK page feature statement. Frequency, input voltage/power and measurement reference are not stated; the 120 dB claim is not labelled maximum. Do not compare it numerically with the specifically conditioned 110 dB at1 kHz/1 Vrms claim or use it as a comparable sensitivity/maximum-output input.

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical data
Not provided120 dB SPL
Accessibility features
Sources
Sennheiser HD 490 PRO

Manufacturer specification · Sennheiser describes these as patented accessibility features.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data
Sennheiser HD 400 PRO

No source recorded.

Braille-guided L/R ear cups; grooved ear pads for eyeglassesNot provided
In the boxDifferent
Sources
Sennheiser HD 490 PRO

Manufacturer specification · The HD 490 PRO Plus (700287) adds a 3 m cable, an extra headband pad and a case; it is a separate article.

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
HD 490 PRO headphones, 3.5 mm to 6.3 mm adapter, 1.8 m cable, mixing ear pads, producing ear pads, quick guide, safety guideHD 400 PRO headphones, 3 m coiled cable with 3.5 mm jack plug, 3.5 mm to 6.3 mm adapter, 1.8 m straight cable, quick guide, safety guide
Operating temperature
Sources
Sennheiser HD 490 PRO

No source recorded.

Not provided−15 °C to +55 °C
Show unverified (3)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
Microphone
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The complete exact sources list the headphone and accessories but do not explicitly establish absence of a microphone. An omitted microphone and a stereo headphone plug alone cannot become a sourced false capability. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
Not listed by the manufacturerNot listed by the manufacturer
Active noise cancellation
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The complete exact sources establish an open dynamic wired design but do not explicitly negate active noise cancellation. Open construction and omission of ANC do not establish a false capability. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical dataSennheiser HD 400 PRO — product specification sheet (EN, V1.0)
Not listed by the manufacturerNot listed by the manufacturer
Battery life
Sources
Sennheiser HD 490 PRO

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. · Manufacturer specification

Sennheiser HD 490 PRO (article 700286) — official UK product page and technical dataSennheiser HD 490 PRO | HD 490 PRO Plus — product specification sheet (EN)
Sennheiser HD 400 PRO

The retained exact sources do not explicitly establish battery life or that no battery is required for operation. Do not infer a not-applicable operating requirement from analogue/dynamic construction or a battery-included No row. · Manufacturer specification

Sennheiser HD 400 PRO (article 700047) — official UK product page and technical data
Not listed by the manufacturerNot listed by the manufacturer
First product manufacturer sourceSecond product manufacturer source
FIND YOUR CONTENDERS

More products

Closest headphones to this pair by shared key specifications. Not a popularity ranking.

See all 213 headphones
Sennheiser HD 505 open-back over-ear headphones in black with copper accents, three-quarter view

Sennheiser HD 505

Impedance
120 Ω
Cable length
1.8 m
Wearing style
Over-ear (circumaural), open-back dynamic headphones
Prices & product profile
Sennheiser HD 550 open-back over-ear headphones in black, three-quarter view

Sennheiser HD 550

Impedance
150 Ω
Cable length
1.8 m
Wearing style
Over-ear, open-back dynamic headphones
Prices & product profile
Sennheiser HD 560S open-back over-ear headphones in black, three-quarter view

Sennheiser HD 560S

Impedance
120 Ω
Wearing style
Over-ear, open-back dynamic headphones
Wired / wireless connections
Wired analogue; detachable cable with a 3.5 mm and 6.3 mm plug/adapter pair (which end is the plug conflicts across Sennheiser's sources)
Prices & product profile
Sennheiser HD 660S2 open-back over-ear headphones with model badge and detachable cable visible

Sennheiser HD 660S2

Impedance
300 Ω
Cable length
1.8 m
Wearing style
Over-ear (circumaural), open-back dynamic headphones
Prices & product profile

Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.