HEADPHONES · YOUR NEXT FACE-OFF

Beyerdynamic DT 990 PRO 250 ohm vs Sennheiser HD 490 PRO

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

Compared products

YOUR FIRST CHOICE

Beyerdynamic DT 990 PRO 250 ohm

459038 · 250 ohm · coiled cable

Full product profile Official image

Exact model & source notes

The DT 990 PRO in its 250-ohm version (article 459038) is beyerdynamic's open-back, around-ear wired studio headphone with a fixed, single-sided 3 m coiled cable, a 3.5 mm plug and a 6.35 mm adapter. It is passive, has no microphone and is intended for listening and editing rather than for isolation; it works with beyerdynamic's free HEADPHONE LAB plug-in.

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 Beyerdynamic DT 990 PRO 250 ohm for

Higher stated nominal impedance: 250 ohm vs 130 ohm
Longer stated cable length: 3 m vs 1.8 m

Choose the Sennheiser HD 490 PRO for

Lower stated nominal impedance: 130 ohm vs 250 ohm

Built from verified specifications that differ. Not a rating or a recommendation.

See the 8 verified differences

THE CONTENDER

Sennheiser HD 490 PRO

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

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

Beyerdynamic DT 990 PRO 250 ohm UK & US retailers

UK & US price history: no verified listing yet

Sennheiser HD 490 PRO UK & US retailers

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.

Beyerdynamic DT 990 PRO 250 ohm250 Ω

Manufacturer specification · Nominal impedance; a 250-ohm load needs a source or headphone amplifier able to drive it.

Source 1 Source 2

Sennheiser HD 490 PRO130 Ω

Source 1 Source 2

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 ↓

8 verified differences, most decision-relevant first. 2 are also drawn in Visual facts above. Missing information stays separate.

Wired / wireless connections

Beyerdynamic DT 990 PRO 250 ohmWired; fixed (non-detachable) single-sided 3 m coiled cable with 3.5 mm stereo mini-jack and 6.35 mm (1/4-inch) adapter

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

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · beyerdynamic's FAQ on the product page states that the classic DT models, naming the DT 990 PRO, have fixed cables, whereas PRO X models come with detachable cables. The 80-ohm model (718173) has a straight cable instead; this record is the 250-ohm coiled-cable model.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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

Check the exact configuration and source conditions for your use.

Nominal impedance

In Visual facts

Beyerdynamic DT 990 PRO 250 ohm250 ohm

Sennheiser HD 490 PRO130 ohm

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Nominal impedance; a 250-ohm load needs a source or headphone amplifier able to drive it.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification

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

Check the exact configuration and source conditions for your use.

Driver construction

Beyerdynamic DT 990 PRO 250 ohmDynamic

Sennheiser HD 490 PRO38 mm dynamic transducer

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Driver diameter is not published in the sources read.

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification

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

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

Cable length

In Visual facts

Beyerdynamic DT 990 PRO 250 ohm3 m

Sennheiser HD 490 PRO1.8 m

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Coiled cable; length as stated by beyerdynamic.

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification

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

Beyerdynamic DT 990 PRO 250 ohm<0.2%

Sennheiser HD 490 PRO<0.2% at 1 kHz, 100 dB SPL

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification

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

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

Earpads

Beyerdynamic DT 990 PRO 250 ohmVelour, circumaural, replaceable (spare part EDT 990 V)

Sennheiser HD 490 PROTwo washable, replaceable sets supplied: mixing pads and producing pads

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification

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

Check the exact configuration and source conditions for your use.

Show 2 more verified differences

Rated frequency range

Beyerdynamic DT 990 PRO 250 ohm5–35,000 Hz

Sennheiser HD 490 PRO5–36,100 Hz (−10 dB)

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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 data Sennheiser 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.

Rated sensitivity

Beyerdynamic DT 990 PRO 250 ohm96 dB nominal SPL

Sennheiser HD 490 PRO105 dB SPL (1 kHz, 1 Vrms); 96 dB SPL (1 kHz, 1 mW)

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · beyerdynamic does not state the reference (per mW or per V) in these sources; specifications are stated according to EN 60 268-7.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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)

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.

Small physical differences (1)

Weight without cable

Beyerdynamic DT 990 PRO 250 ohm250 g

Sennheiser HD 490 PRO260 g

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Headphones without cable, per the product pages' technical data ('Weight headphones without cable 250 g'). The same product pages state 'Weighing just 375 grams including the cable' (recorded separately as weight including cable), and the 08.22 spec sheet lists 370 g for the 250-ohm version without stating whether the cable is included.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO, 250 Ohms — official North America store page and technical data beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

Sennheiser HD 490 PRO

Manufacturer specification · Without cable, per the specification sheet.

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

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

Missing or non-comparable evidence (16)

Active noise cancellation

Beyerdynamic DT 990 PRO 250 ohmNo

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Passive, open-back design; no active noise cancellation is listed, and open-back headphones let outside sound through.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)

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)

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

Microphone

In Visual facts

Beyerdynamic DT 990 PRO 250 ohmNo

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Stereo headphone plug; no microphone or remote is listed.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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

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

Battery life

Beyerdynamic DT 990 PRO 250 ohmNot required: passive wired headphones powered by the audio source

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Passive headphones with no battery or charging.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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

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

Accessibility features

Beyerdynamic DT 990 PRO 250 ohmNot verified

Sennheiser HD 490 PROBraille-guided L/R ear cups; grooved ear pads for eyeglasses

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

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

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

Cable arrangement

Beyerdynamic DT 990 PRO 250 ohmNot verified

Sennheiser HD 490 PRODetachable 1.8 m cable; right and left ear-cup jacks, so the cable can be connected on either side

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

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

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

Supplied plug and adapter

Beyerdynamic DT 990 PRO 250 ohmGold-plated 3.5 mm stereo mini-jack with 6.35 mm (1/4-inch) adapter

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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.

Driver diameter

Beyerdynamic DT 990 PRO 250 ohmNot verified

Sennheiser HD 490 PRO38 mm

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

Sennheiser HD 490 PRO

Manufacturer specification

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

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

Frequency characteristic

Beyerdynamic DT 990 PRO 250 ohmDiffuse-field

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Spec sheet feature: 'Open diffuse field studio headphones'.

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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.

Nominal headband pressure

Beyerdynamic DT 990 PRO 250 ohmApprox. 3.5–5.5 N

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · The current product page gives a 3.5–5.5 N range; the 08.22 spec sheet gives approx. 3.5 N.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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.

HEADPHONE LAB software

Beyerdynamic DT 990 PRO 250 ohmSupported through a separate DAW plug-in

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Free plug-in for DAW software (VST3, AU and AAX for Windows and macOS) with crossfeed and optional room simulation; there is no standalone version. beyerdynamic's FACTORY CALIBRATION list names other models, not this DT 990 PRO.

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list

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.

In the box

Beyerdynamic DT 990 PRO 250 ohmNot verified

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

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

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

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

Rated power

Beyerdynamic DT 990 PRO 250 ohmNot verified

Sennheiser HD 490 PRO300 mW (100 h, noise IEC 60268)

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

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

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

Maximum sound pressure level

Beyerdynamic DT 990 PRO 250 ohmNot verified

Sennheiser HD 490 PRO128 dB SPL (1 kHz, 5% THD)

Sources

Beyerdynamic DT 990 PRO 250 ohm

No source recorded for this side.

Sennheiser HD 490 PRO

Manufacturer specification

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

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

Power handling

Beyerdynamic DT 990 PRO 250 ohm100 mW

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification

beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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.

Serviceability

Beyerdynamic DT 990 PRO 250 ohmEvery part serviceable; ear pads (EDT 990 V) and headband pad (BN 59-53/D) listed as replacement parts

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Product page: 'And if something does need replacing – every part is serviceable.' Its FAQ adds that all models are designed for long-term use thanks to their replaceable components. The spec sheet lists replacement parts EDT 990 V (ear pads, velours, circumaural, order # 926.679) and BN 59-53/D (headband pad, order # 990.681).

beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22)

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.

Weight including cable

Beyerdynamic DT 990 PRO 250 ohm375 g

Sennheiser HD 490 PRONot verified

Sources

Beyerdynamic DT 990 PRO 250 ohm

Manufacturer specification · Including the cable, per the product pages ('Weighing just 375 grams including the cable'). The 08.22 spec sheet lists 370 g for the 250-ohm version without stating whether the cable is included; the product pages' technical data gives 250 g without cable.

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.

2 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.

Open-back designFor a quiet listening spaceClosed-back designAn enclosed outer earcupDetachable cableUnplug the cable at the headphonesBuilt-in microphoneFor calls and voice chatActive noise cancellationNot the same as a closed back

YOUR CHOICE

Beyerdynamic DT 990 PRO 250 ohm

Select a feature to check your fit.

YOUR CHOICE

Sennheiser HD 490 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

Beyerdynamic DT 990 PRO 250 ohm

What it brings

Replaceable velour ear pads and a headband pad are listed as spare parts, so the wearing parts can be renewed rather than replacing the headphones.
Manufacturer source Manufacturer source
The single-sided coiled cable ends in a gold-plated 3.5 mm plug with a 1/4-inch (6.35 mm) adapter, and beyerdynamic says the single-sided cable makes the headphones easier to handle when they are constantly put on and taken off.
Manufacturer source Manufacturer source

What to check

At 250 ohms nominal impedance, phones and laptop outputs may not drive it to a comfortable level; beyerdynamic also lists an 80-ohm version (718173) of the same model.
Manufacturer source Manufacturer source
The open-back design lets sound in and out, and there is no microphone, so it is unsuited to noisy places, recording next to a microphone or calls.
Manufacturer source Manufacturer source
The cable is fixed rather than detachable: beyerdynamic states that its classic DT models, including the DT 990 PRO, have fixed cables, whereas its PRO X models come with detachable cables.
Manufacturer source

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

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

27 of 27 specifications Sources in each row

Source-backed specifications for Beyerdynamic DT 990 PRO 250 ohm and Sennheiser HD 490 PRO
Specification	Beyerdynamic DT 990 PRO 250 ohm	Sennheiser HD 490 PRO

Wearing style Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Over-ear (circumaural), open-back wired studio headphones	Over-ear (circumaural), open-back wired studio headphones
Weight without cableDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Headphones without cable, per the product pages' technical data ('Weight headphones without cable 250 g'). The same product pages state 'Weighing just 375 grams including the cable' (recorded separately as weight including cable), and the 08.22 spec sheet lists 370 g for the 250-ohm version without stating whether the cable is included. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO, 250 Ohms — official North America store page and technical data beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification · Without cable, per the specification sheet. Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	250 g	260 g
Weight including cable Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Including the cable, per the product pages ('Weighing just 375 grams including the cable'). The 08.22 spec sheet lists 370 g for the 250-ohm version without stating whether the cable is included; the product pages' technical data gives 250 g without cable. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO, 250 Ohms — official North America store page and technical data beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	375 g	Not provided
Acoustic design Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Open-back	Open-back
Nominal headband pressure Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · The current product page gives a 3.5–5.5 N range; the 08.22 spec sheet gives approx. 3.5 N. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	Approx. 3.5–5.5 N	Not provided
EarpadsDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Velour, circumaural, replaceable (spare part EDT 990 V)	Two washable, replaceable sets supplied: mixing pads and producing pads
Serviceability Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Product page: 'And if something does need replacing – every part is serviceable.' Its FAQ adds that all models are designed for long-term use thanks to their replaceable components. The spec sheet lists replacement parts EDT 990 V (ear pads, velours, circumaural, order # 926.679) and BN 59-53/D (headband pad, order # 990.681). beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	Every part serviceable; ear pads (EDT 990 V) and headband pad (BN 59-53/D) listed as replacement parts	Not provided

Wired / wireless connectionsDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · beyerdynamic's FAQ on the product page states that the classic DT models, naming the DT 990 PRO, have fixed cables, whereas PRO X models come with detachable cables. The 80-ohm model (718173) has a straight cable instead; this record is the 250-ohm coiled-cable model. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Wired; fixed (non-detachable) single-sided 3 m coiled cable with 3.5 mm stereo mini-jack and 6.35 mm (1/4-inch) adapter	Wired; detachable 1.8 m cable with 3.5 mm plug and supplied 6.3 mm adapter; right and left ear-cup jacks
Battery life Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Passive headphones with no battery or charging. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Not required: passive wired headphones powered by the audio source	Not listed by the manufacturer
Cable lengthDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Coiled cable; length as stated by beyerdynamic. beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data	3 m	1.8 m
Supplied plug and adapter Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	Gold-plated 3.5 mm stereo mini-jack with 6.35 mm (1/4-inch) adapter	Not provided
Cable arrangement Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. 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	Not provided	Detachable 1.8 m cable; right and left ear-cup jacks, so the cable can be connected on either side

Driver constructionDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Driver diameter is not published in the sources read. beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Dynamic	38 mm dynamic transducer
Nominal impedanceDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Nominal impedance; a 250-ohm load needs a source or headphone amplifier able to drive it. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO (article 700286) — official UK product page and technical data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	250 ohm	130 ohm
Rated frequency rangeDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	5–35,000 Hz	5–36,100 Hz (−10 dB)
Frequency characteristic Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Spec sheet feature: 'Open diffuse field studio headphones'. beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	Diffuse-field	Not provided
Rated sensitivityDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · beyerdynamic does not state the reference (per mW or per V) in these sources; specifications are stated according to EN 60 268-7. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) 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)	96 dB nominal SPL	105 dB SPL (1 kHz, 1 Vrms); 96 dB SPL (1 kHz, 1 mW)
Rated total harmonic distortionDifferent Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	<0.2%	<0.2% at 1 kHz, 100 dB SPL
Power handling Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) Sennheiser HD 490 PRO No source recorded.	100 mW	Not provided
Driver diameter Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Not provided	38 mm
Maximum sound pressure level Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. Sennheiser HD 490 PRO Manufacturer specification Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Not provided	128 dB SPL (1 kHz, 5% THD)
Rated power Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Not provided	300 mW (100 h, noise IEC 60268)

Microphone Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Stereo headphone plug; no microphone or remote is listed. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic DT 990 PRO — spec sheet E1/DT 990 PRO (08.22) 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	No	Not listed by the manufacturer
Active noise cancellation Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Passive, open-back design; no active noise cancellation is listed, and open-back headphones let outside sound through. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store) 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)	No	Not listed by the manufacturer

HEADPHONE LAB software Sources Beyerdynamic DT 990 PRO 250 ohm Manufacturer specification · Free plug-in for DAW software (VST3, AU and AAX for Windows and macOS) with crossfeed and optional room simulation; there is no standalone version. beyerdynamic's FACTORY CALIBRATION list names other models, not this DT 990 PRO. beyerdynamic DT 990 PRO, 250 Ohms — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list Sennheiser HD 490 PRO No source recorded.	Supported through a separate DAW plug-in	Not provided
Accessibility features Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. 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	Not provided	Braille-guided L/R ear cups; grooved ear pads for eyeglasses

In the box Sources Beyerdynamic DT 990 PRO 250 ohm No source recorded. 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 data Sennheiser HD 490 PRO \| HD 490 PRO Plus — product specification sheet (EN)	Not provided	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 guide

First product manufacturer source Second product manufacturer source

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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.