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HEADPHONES · YOUR NEXT FACE-OFF

Sennheiser HD 300 PRO vs Sennheiser HD 300 PROtect

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

Compared products

YOUR FIRST CHOICE

Sennheiser HD 300 PRO

508288 · HD 300 PRO (not HD 300 PROtect) · wired

Sennheiser HD 300 PRO closed-back monitoring headphones, three-quarter front view
Full product profile Official image
Exact model & source notes

The HD 300 PRO (article 508288) is Sennheiser's closed-back, around-ear wired monitoring headphone for studio, stage and broadcast work. Sennheiser rates up to 32 dB of passive ambient-noise attenuation, a 64 Ω impedance and a 123 dB maximum SPL, and says the viscoelastic ear pads, headband padding and cable are all user-serviceable. It weighs approx. 297 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
WHAT DIFFERS

7 verified differences, led by Wired / wireless connections, cable arrangement and ear pads. Compared in full below. Not a rating.

See the 7 verified differences
THE CONTENDER

Sennheiser HD 300 PROtect

506898 · HD 300 PROtect (with ActiveGard) · wired

Sennheiser HD 300 PROtect closed-back monitoring headphones with ActiveGard, three-quarter view
Full product profile Official image
Exact model & source notes

The HD 300 PROtect (article 506898) is the HD 300 PRO closed-back, around-ear monitoring headphone with Sennheiser's switchable ActiveGard limiter, which limits peaks above 110 dB. It shares the HD 300 PRO's passive attenuation (rated up to 32 dB), 64 Ω impedance, approx. 297 g weight without cable and replaceable pads, headband padding and cable. It is passive, with no microphone or active noise cancellation. 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 300 PRO UK & US retailers

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

HD 300 PROtect 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 SIDE7 topics

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

SELECTED TOPIC
01 / 07

Open-back design

Open-back earcups are not sealed. Start here if your listening space is quiet; this construction is not a sound-quality rating.

Sennheiser HD 300 PRO: closed-back · illustration, not to scale
Sennheiser HD 300 PROtect: closed-back · illustration, not to scale
Sennheiser HD 300 PROtectNo

Closed-back. Manufacturer specification

Source 1Source 2
Choose your must-haves

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 ↓

7 verified differences, most decision-relevant first. Missing information stays separate.

Wired / wireless connections

Sennheiser HD 300 PROWired; user-replaceable 1.5 m cable with 3.5 mm jack and supplied 6.3 mm (1/4") stereo jack adapter
Sennheiser HD 300 PROtectWired; exchangeable 1.5 m cable with 3.5 mm jack on Sennheiser's system connector, and supplied 6.3 mm (1/4") stereo jack adapter
Sources
Sennheiser HD 300 PRO

Manufacturer specification · The box list names a 1.5 m cable; the technical data gives approx. 1.55 m. A replacement straight cable is listed as a spare part.

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · The box list names a 1.5 m cable; the specification sheet and quick guide give approx. 1.55 m.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)

Check the exact configuration and source conditions for your use.

Cable arrangement

Sennheiser HD 300 PROUser-replaceable cable; Sennheiser describes a coiled cable with low handling noise that filters structure-borne noise at the earpiece
Sennheiser HD 300 PROtectExchangeable cable on Sennheiser's system connector; Sennheiser describes a coiled cable that filters structure-borne noise at the earpiece
Sources
Sennheiser HD 300 PRO

Manufacturer specification · The spare part listed on the page is the 'HD 26/300 PRO - Straight Cable'.

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)

Check the exact configuration and source conditions for your use.

Ear pads

Sennheiser HD 300 PROViscoelastic; user-replaceable
Sennheiser HD 300 PROtectViscoelastic; replaceable
Sources

Check the exact configuration and source conditions for your use.

In the box

Sennheiser HD 300 PROHD 300 PRO headphones, 1.5 m cable with 3.5 mm jack, 6.3 mm (1/4") stereo jack adapter, quick guide
Sennheiser HD 300 PROtectHD 300 PROtect headphones, 1.5 m cable with 3.5 mm jack, 6.3 mm (1/4") stereo jack adapter, quick guide
Sources

Check the exact configuration and source conditions for your use.

Maximum sound pressure level

Sennheiser HD 300 PRO123 dB SPL at 1 kHz
Sennheiser HD 300 PROtect123 dB SPL at 1 kHz (ActiveGard off); 110 dB SPL at 1 kHz (ActiveGard on)
Sources

Check the exact configuration and source conditions for your use.

Serviceability

Sennheiser HD 300 PROField-replaceable components: ear pads, headband padding and cable are user-serviceable
Sennheiser HD 300 PROtectModular: ear pads, headband padding and cable are replaceable
Sources

Check the exact configuration and source conditions for your use.

Show 1 more verified difference

Acoustic features

Sennheiser HD 300 PROHum and structure-borne noise rejection; recessed headband pad for pressure relief
Sennheiser HD 300 PROtectSwitchable ActiveGard limiter that limits peaks above 110 dB; recess for the fontanelle for pressure distribution and wearing comfort
Sources
Sennheiser HD 300 PROtect

Manufacturer specification · Sennheiser states that the HD 300 PROtect's switchable ActiveGard hearing protection satisfies international directives on industrial safety and noise control.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)Sennheiser HD 300 PRO / PROtect — quick guide (Publ. 07/18)

Check the exact configuration and source conditions for your use.

Missing or non-comparable evidence (3)

Active noise cancellation

Sennheiser HD 300 PRONot verified
Sennheiser HD 300 PROtectNo
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish active noise cancellation presence or absence for listening. Preserve separately documented microphone noise reduction, closed construction or passive attenuation; none negates active ANC. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · Attenuation is passive: the page lists 'Noise cancellation (db) Max 32 dB (passive)' and no battery. ActiveGard is a peak limiter, not noise cancellation.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)

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

Microphone

In Visual facts
Sennheiser HD 300 PRONot verified
Sennheiser HD 300 PROtectNo
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish microphone presence or absence. Omission from package lists, optional microphone accessories and stereo audio pin diagrams do not establish microphone=false. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · Monitoring headphones; no microphone is listed in the specifications or package contents.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)

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

Battery life

Sennheiser HD 300 PRONot verified
Sennheiser HD 300 PROtectNot required: passive wired headphones powered by the audio source
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish battery life or a whole-device no-battery operating requirement. A wired connection, omitted charger or Battery included N does not establish not-required. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical data
Sennheiser HD 300 PROtect

Manufacturer specification · The product page lists 'Battery included: N'.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical data

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

13 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 300 PRO

Select a feature to check your fit.

YOUR CHOICE

Sennheiser HD 300 PROtect

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 300 PRO

What it brings

  • Sennheiser rates up to 32 dB of passive ambient-noise attenuation from the closed back and viscoelastic ear pads, for loud environments such as stages and broadcast.
    Manufacturer source Manufacturer source
  • Ear pads, headband padding and the cable are described as field-replaceable by the user.
    Manufacturer source Manufacturer source
  • Impedance (64 Ω), sensitivity (108 ±3 dB SPL at 1 V) and maximum SPL (123 dB) are all published, which helps when matching it to a mixer or headphone amplifier.
    Manufacturer source

What to check

  • Sennheiser rates the contact pressure at approx. 6 N for a secure fit, and at approx. 297 g without the cable, comfort over long sessions is personal.
    Manufacturer source Manufacturer source
  • Check the supplied cable configuration: Sennheiser describes a coiled section near the earpiece, lists a 1.5 m cable in the box and approx. 1.55 m in the technical data. The separately listed straight cable is a replacement option. The transducer diameter is not stated.
    Manufacturer source Manufacturer source
  • The specification sheet lists this HD 300 PRO configuration without ActiveGard. Switchable ActiveGard hearing protection belongs to the separate HD 300 PROtect, article 506898; it is distinct from the unresolved active noise-cancellation claim.
    Manufacturer source Manufacturer source

Sennheiser HD 300 PROtect

What it brings

What to check

COMPARE THE DETAILS

Full specifications

How we verify
23 of 23 specifications Sources in each row
Source-backed specifications for Sennheiser HD 300 PRO and Sennheiser HD 300 PROtect
SpecificationSennheiser HD 300 PROSennheiser HD 300 PROtect
Wearing style
Sources
Over-ear (circumaural), closed-back wired monitoring headphonesOver-ear (circumaural), closed-back wired monitoring headphones
Acoustic design
Sources
Closed-backClosed-back
Weight
Sources
Sennheiser HD 300 PROtect

Manufacturer specification · Approximate, without cable, per the specification sheet and quick guide covering both HD 300 PRO and HD 300 PROtect. The product page separately lists 'Product weight (g) 550' without a basis.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)Sennheiser HD 300 PRO / PROtect — quick guide (Publ. 07/18)
297 g297 g
Contact pressure
Sources
Approx. 6 NApprox. 6 N
Ear padsDifferent
Sources
Viscoelastic; user-replaceableViscoelastic; replaceable
ServiceabilityDifferent
Sources
Field-replaceable components: ear pads, headband padding and cable are user-serviceableModular: ear pads, headband padding and cable are replaceable
Wired / wireless connectionsDifferent
Sources
Sennheiser HD 300 PRO

Manufacturer specification · The box list names a 1.5 m cable; the technical data gives approx. 1.55 m. A replacement straight cable is listed as a spare part.

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · The box list names a 1.5 m cable; the specification sheet and quick guide give approx. 1.55 m.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Wired; user-replaceable 1.5 m cable with 3.5 mm jack and supplied 6.3 mm (1/4") stereo jack adapterWired; exchangeable 1.5 m cable with 3.5 mm jack on Sennheiser's system connector, and supplied 6.3 mm (1/4") stereo jack adapter
Cable arrangementDifferent
Sources
Sennheiser HD 300 PRO

Manufacturer specification · The spare part listed on the page is the 'HD 26/300 PRO - Straight Cable'.

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
User-replaceable cable; Sennheiser describes a coiled cable with low handling noise that filters structure-borne noise at the earpieceExchangeable cable on Sennheiser's system connector; Sennheiser describes a coiled cable that filters structure-borne noise at the earpiece
Cable length
Sources
Sennheiser HD 300 PROtect

Manufacturer specification · Approximate; the box list names the cable as 1.5 m.

Sennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)Sennheiser HD 300 PRO / PROtect — quick guide (Publ. 07/18)
1.55 m1.55 m
Battery life
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish battery life or a whole-device no-battery operating requirement. A wired connection, omitted charger or Battery included N does not establish not-required. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical data
Sennheiser HD 300 PROtect

Manufacturer specification · The product page lists 'Battery included: N'.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical data
Not listed by the manufacturerNot required: passive wired headphones powered by the audio source
Driver construction
Sources
Sennheiser HD 300 PRO

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

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

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

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Dynamic transducers with precision diaphragmsDynamic transducers with precision diaphragms
Rated frequency range
Sources
6–25,000 Hz6–25,000 Hz
Nominal impedance
Sources
64 ohm64 ohm
Rated sensitivity
Sources
108 ±3 dB SPL (1 kHz, 1 Vrms)108 ±3 dB SPL (1 kHz, 1 Vrms)
Maximum sound pressure levelDifferent
Sources
123 dB SPL at 1 kHz123 dB SPL at 1 kHz (ActiveGard off); 110 dB SPL at 1 kHz (ActiveGard on)
Rated total harmonic distortion
Sources
<0.1% at 1 kHz, 94 dB SPL<0.1% at 1 kHz, 94 dB SPL
Rated power
Sources
Sennheiser HD 300 PRO

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

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

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

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
500 mW500 mW
Acoustic featuresDifferent
Sources
Sennheiser HD 300 PROtect

Manufacturer specification · Sennheiser states that the HD 300 PROtect's switchable ActiveGard hearing protection satisfies international directives on industrial safety and noise control.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)Sennheiser HD 300 PRO / PROtect — quick guide (Publ. 07/18)
Hum and structure-borne noise rejection; recessed headband pad for pressure reliefSwitchable ActiveGard limiter that limits peaks above 110 dB; recess for the fontanelle for pressure distribution and wearing comfort
Microphone
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish microphone presence or absence. Omission from package lists, optional microphone accessories and stereo audio pin diagrams do not establish microphone=false. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · Monitoring headphones; no microphone is listed in the specifications or package contents.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Not listed by the manufacturerNo
Active noise cancellation
Sources
Sennheiser HD 300 PRO

The reviewed exact sources do not explicitly establish active noise cancellation presence or absence for listening. Preserve separately documented microphone noise reduction, closed construction or passive attenuation; none negates active ANC. · Manufacturer specification

Sennheiser HD 300 PRO (article 508288) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Sennheiser HD 300 PROtect

Manufacturer specification · Attenuation is passive: the page lists 'Noise cancellation (db) Max 32 dB (passive)' and no battery. ActiveGard is a peak limiter, not noise cancellation.

Sennheiser HD 300 PROtect (article 506898) — official UK product page and technical dataSennheiser HD 300 PRO | HD 300 PROtect — product specification sheet (EN, SP 1184 v1.0)
Not listed by the manufacturerNo
Ambient noise attenuation
Sources
Up to 32 dB (passive)Up to 32 dB (passive)
In the boxDifferent
Sources
HD 300 PRO headphones, 1.5 m cable with 3.5 mm jack, 6.3 mm (1/4") stereo jack adapter, quick guideHD 300 PROtect headphones, 1.5 m cable with 3.5 mm jack, 6.3 mm (1/4") stereo jack adapter, quick guide
Operating temperature
Sources
−15 °C to +55 °C−15 °C to +55 °C
First product manufacturer sourceSecond product manufacturer source
FIND YOUR CONTENDERS

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

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beyerdynamic DJ 300 PRO X closed-back DJ headphones with on-ear pads, three-quarter view

Beyerdynamic DJ 300 PRO X

Impedance
48 Ω
Cable length
1.5 m
Wearing style
On-ear as delivered, convertible to over-ear with the supplied pads (2-in-1); closed-back wired DJ headphones
Prices & product profile
beyerdynamic DT 275 PRO compact on-ear monitoring headphones in black

Beyerdynamic DT 275 PRO

Impedance
45 Ω
Cable length
1.5 m
Wearing style
On-ear (supra-aural), closed-back wired monitoring headphones
Prices & product profile
Sennheiser HD 25 on-ear monitoring headphones in black with split headband

Sennheiser HD 25

Impedance
70 Ω
Cable length
1.5 m
Wearing style
On-ear (supra-aural), closed-back wired monitoring headphones
Prices & product profile
Sennheiser HD 25 Light on-ear monitoring headphones with single rigid headband

Sennheiser HD 25 LIGHT

Impedance
70 Ω
Cable length
1.5 m
Wearing style
On-ear (supra-aural), closed-back wired monitoring 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.