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HEADPHONES · YOUR NEXT FACE-OFF

HyperX Cloud III vs Sennheiser HD 300 PROtect

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

Compared products

YOUR FIRST CHOICE

HyperX Cloud III

727A8AA · Black · wired

HyperX Cloud III wired gaming headset in black with detachable microphone
Exact model & source notes

The HyperX Cloud III (SKU 727A8AA, black) is a closed-back, over-ear wired gaming headset with angled 53 mm drivers, a full metal (aluminium) frame, ear-cup volume and mic-mute controls, a detachable 10 mm noise-cancelling microphone and a USB dongle alongside its 3.5 mm connection. HyperX lists it for PC, PlayStation, Xbox, Switch, Mac and mobile.

Specifications checked 26 Sept 2026.

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

Manufacturer specifications
WHAT DIFFERS
MicrophoneYesNo
Rated total harmonic distortion<2%<0.1% at 1 kHz, 94 dB SPL
Rated frequency response10 Hz – 21 kHz6–25,000 Hz
3 of 9 verified differences, in the order listed below. Not a rating.
See the 9 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
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

HyperX Cloud III UK & US retailers

UK & US price history: no verified listing yet

Sennheiser HD 300 PROtect 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 SIDE7 topics

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

SELECTED TOPIC
01 / 07

Microphone

A built-in microphone matters for calls and voice chat. An audio-only headphone connection does not supply a microphone channel.

HyperX Cloud IIIYes

Manufacturer specification · Detachable 10 mm electret condenser microphone, unidirectional, noise-cancelling, with LED mute indicator.

Sennheiser HD 300 PROtectNo

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

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 ↓

9 verified differences, most decision-relevant first. 1 is also drawn in Visual facts above. 1 feature is the same under different published names, grouped below. Missing information stays separate.

Wired / wireless connections

HyperX Cloud IIIWired: 3.5 mm, plus a USB dongle for USB-C, and USB-A via the supplied 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 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.

Microphone

In Visual facts
HyperX Cloud IIIYes
Sennheiser HD 300 PROtectNo
Sources
HyperX Cloud III

Manufacturer specification · Detachable 10 mm electret condenser microphone, unidirectional, noise-cancelling, with LED mute indicator.

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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)

Check the exact configuration and source conditions for your use.

Driver construction

HyperX Cloud IIIDynamic, 53 mm with neodymium magnets (angled)
Sennheiser HD 300 PROtectDynamic transducers with precision diaphragms
Sources
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)

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

Supplied cables

HyperX Cloud IIIHeadset cable 3.93 ft; USB dongle cable 4.26 ft
Sennheiser HD 300 PROtectExchangeable cable on Sennheiser's system connector; Sennheiser describes a coiled cable that filters structure-borne noise at the earpiece
Sources
HyperX Cloud III

Manufacturer specification · HyperX lists imperial lengths only.

HyperX Cloud III – Gaming Headset — official HyperX US product page and technical specifications

Check the exact configuration and source conditions for your use.

Rated total harmonic distortion

HyperX Cloud III<2%
Sennheiser HD 300 PROtect<0.1% at 1 kHz, 94 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 cushions

HyperX Cloud IIIMemory foam with premium leatherette
Sennheiser HD 300 PROtectViscoelastic; replaceable
Sources
Show 3 more verified differences

Rated frequency response

HyperX Cloud III10 Hz – 21 kHz
Sennheiser HD 300 PROtect6–25,000 Hz
Sources

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

In the box

HyperX Cloud IIIHeadset, detachable microphone, USB dongle, USB-C to USB-A adapter, quick start 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.

Rated sensitivity

HyperX Cloud III100 dB SPL/mW at 1 kHz
Sennheiser HD 300 PROtect108 ±3 dB SPL (1 kHz, 1 Vrms)
Sources

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.

Same feature, different names (1)

The sources publish different names for the same feature. Both names and their sources are shown; they are not counted as differences.

Wearing style

HyperX Cloud IIIOver-ear (circumaural), closed-back wired gaming headset
Sennheiser HD 300 PROtectOver-ear (circumaural), closed-back wired monitoring headphones
Sources
Small physical differences (1)

Weight

HyperX Cloud III308 g
Sennheiser HD 300 PROtect297 g
Sources
HyperX Cloud III

Manufacturer specification · Without microphone; 320 g with the microphone attached (UK page). The US page lists 0.67 lb / 0.70 lb.

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specificationsHyperX Cloud III – Gaming Headset — official HyperX US product page and technical specifications
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)

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

Missing or non-comparable evidence (15)

Active noise cancellation

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtectNo
Sources
HyperX Cloud III

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

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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.

Battery life

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtectNot required: passive wired headphones powered by the audio source
Sources
HyperX Cloud III

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

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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.

Controls

HyperX Cloud IIIOnboard ear-cup controls for headphone volume and microphone mute
Sennheiser HD 300 PROtectNot verified
Sources
Sennheiser HD 300 PROtect

No source recorded for this side.

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

Rated power

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtect500 mW
Sources
HyperX Cloud III

No source recorded for this side.

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)

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

Maximum sound pressure level

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtect123 dB SPL at 1 kHz (ActiveGard off); 110 dB SPL at 1 kHz (ActiveGard on)
Sources
HyperX Cloud III

No source recorded for this side.

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

Microphone

HyperX Cloud IIIDetachable electret condenser, unidirectional, noise-cancelling; −42 dBV (0 dB = 1 V/Pa at 1 kHz)
Sennheiser HD 300 PROtectNot verified
Sources
Sennheiser HD 300 PROtect

No source recorded for this side.

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

Operating temperature

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtect−15 °C to +55 °C
Sources
HyperX Cloud III

No source recorded for this side.

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

Ambient noise attenuation

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtectUp to 32 dB (passive)
Sources
HyperX Cloud III

No source recorded for this side.

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

Serviceability

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtectModular: ear pads, headband padding and cable are replaceable
Sources
HyperX Cloud III

No source recorded for this side.

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

Hearing protection and comfort

HyperX Cloud IIINot verified
Sennheiser HD 300 PROtectSwitchable ActiveGard limiter that limits peaks above 110 dB; recess for the fontanelle for pressure distribution and wearing comfort
Sources
HyperX Cloud III

No source recorded for this side.

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)

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.

YOUR CHOICE

HyperX Cloud III

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

HyperX Cloud III

What it brings

  • One headset covers 3.5 mm, USB-C and USB-A: the 3.5 mm plug suits devices with a headphone jack, and the supplied USB dongle and adapter cover USB-C and USB-A ports.
  • HyperX lists compatibility with PC, PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch, Mac and mobile.

What to check

  • The documented audio connections are 3.5 mm and the supplied USB dongle. The “noise-cancelling” label applies to the microphone; active noise cancellation for listening remains unestablished.
  • HyperX lists 308 g without the microphone and 320 g with it, and publishes cable lengths only in feet on its US page.

Sennheiser HD 300 PROtect

What it brings

What to check

COMPARE THE DETAILS

Full specifications

How we verify
28 of 28 specifications Sources in each row
Source-backed specifications for HyperX Cloud III and Sennheiser HD 300 PROtect
SpecificationHyperX Cloud IIISennheiser HD 300 PROtect
Over-ear (circumaural), closed-back wired gaming headsetOver-ear (circumaural), closed-back wired monitoring headphones
WeightDifferent
Sources
HyperX Cloud III

Manufacturer specification · Without microphone; 320 g with the microphone attached (UK page). The US page lists 0.67 lb / 0.70 lb.

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specificationsHyperX Cloud III – Gaming Headset — official HyperX US product page and technical specifications
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)
308 g297 g
Closed-backClosed-back
Memory foam with premium leatheretteViscoelastic; replaceable
Full metal frame (aluminium)Not provided
Contact pressure
Sources
Not providedApprox. 6 N
Not providedModular: ear pads, headband padding and cable are replaceable
Wired / wireless connectionsDifferent
Sources
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: 3.5 mm, plus a USB dongle for USB-C, and USB-A via the supplied 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
Battery life
Sources
HyperX Cloud III

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

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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
Headset cable 3.93 ft; USB dongle cable 4.26 ftExchangeable cable on Sennheiser's system connector; Sennheiser describes a coiled cable that filters structure-borne noise at the earpiece
Compatibility
Sources
Sennheiser HD 300 PROtect

No source recorded.

PC, PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch, Mac, mobileNot provided
Cable length
Sources
HyperX Cloud III

No source recorded.

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)
Not provided1.55 m
Driver constructionDifferent
Sources
Dynamic, 53 mm with neodymium magnets (angled)Dynamic transducers with precision diaphragms
Driver size
Sources
Sennheiser HD 300 PROtect

No source recorded.

53 mmNot provided
10 Hz – 21 kHz6–25,000 Hz
64 ohm64 ohm
100 dB SPL/mW at 1 kHz108 ±3 dB SPL (1 kHz, 1 Vrms)
<2%<0.1% at 1 kHz, 94 dB SPL
Hearing protection and comfort
Sources
HyperX Cloud III

No source recorded.

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)
Not providedSwitchable ActiveGard limiter that limits peaks above 110 dB; recess for the fontanelle for pressure distribution and wearing comfort
Not provided123 dB SPL at 1 kHz (ActiveGard off); 110 dB SPL at 1 kHz (ActiveGard on)
Rated power
Sources
HyperX Cloud III

No source recorded.

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)
Not provided500 mW
MicrophoneDifferent
Sources
HyperX Cloud III

Manufacturer specification · Detachable 10 mm electret condenser microphone, unidirectional, noise-cancelling, with LED mute indicator.

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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)
YesNo
Active noise cancellation
Sources
HyperX Cloud III

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

HyperX Cloud III – Gaming Headset — official HyperX UK product page and specifications
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
Microphone
Sources
Sennheiser HD 300 PROtect

No source recorded.

Detachable electret condenser, unidirectional, noise-cancelling; −42 dBV (0 dB = 1 V/Pa at 1 kHz)Not provided
Ambient noise attenuation
Sources
HyperX Cloud III

No source recorded.

Not providedUp to 32 dB (passive)
Onboard ear-cup controls for headphone volume and microphone muteNot provided
Headset, detachable microphone, USB dongle, USB-C to USB-A adapter, quick start 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
Not provided−15 °C to +55 °C
FIND YOUR CONTENDERS

More products

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

See all 213 headphones
Sennheiser HD 300 PRO closed-back monitoring headphones, three-quarter front view

Sennheiser HD 300 PRO

Impedance
64 Ω
Cable length
1.55 m
Wearing style
Over-ear (circumaural), closed-back wired monitoring headphones
Prices & product profile
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

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.