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HEADPHONES · YOUR NEXT FACE-OFF

HyperX Cloud Alpha vs Sennheiser HD 300 PROtect

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

Compared products

YOUR FIRST CHOICE

HyperX Cloud Alpha

Black-Red · wired 3.5 mm

HyperX Cloud Alpha wired gaming headset in black with red aluminium frame and detachable microphone
Exact model & source notes

The HyperX Cloud Alpha (UK SKU 4P5L1AM#ABB, US SKU 4P5L1AA#ABL, black and red) is a closed-back, over-ear wired gaming headset with 50 mm dual-chamber drivers, an aluminium frame, a detachable Discord and TeamSpeak certified microphone and a detachable braided cable with in-line controls.

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
65 ohmImpedance64 ohm
Rated total harmonic distortion<1%<0.1% at 1 kHz, 94 dB SPL
3 of 12 verified differences, in the order listed below. Not a rating.
See the 12 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 Alpha 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

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.

HyperX Cloud Alpha65 Ω

Manufacturer specification · Listed on the UK page; the US page omits impedance.

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 ↓

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

Acoustic design

HyperX Cloud AlphaClosed-back, dual-chamber driver design
Sennheiser HD 300 PROtectClosed-back
Sources

Wired / wireless connections

HyperX Cloud AlphaWired 3.5 mm via a detachable braided cable with in-line controls; PC extension cable supplied
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 AlphaYes
Sennheiser HD 300 PROtectNo
Sources
HyperX Cloud Alpha

Manufacturer specification · Detachable bi-directional, noise-cancelling electret condenser microphone.

HyperX Cloud Alpha – 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.

HyperX Cloud Alpha65 ohm
Sennheiser HD 300 PROtect64 ohm
Sources
HyperX Cloud Alpha

Manufacturer specification · Listed on the UK page; the US page omits impedance.

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

Check the exact configuration and source conditions for your use.

Driver construction

HyperX Cloud AlphaCustom dynamic 50 mm with neodymium magnets, dual-chamber
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 AlphaDetachable headset cable 4.26 ft with in-line controls; PC extension cable 6.56 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
Show 6 more verified differences

Wearing style

HyperX Cloud AlphaOver-ear (circumaural), closed-back wired gaming headset with aluminium frame
Sennheiser HD 300 PROtectOver-ear (circumaural), closed-back wired monitoring headphones
Sources

Rated total harmonic distortion

HyperX Cloud Alpha<1%
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 AlphaMemory foam with premium leatherette
Sennheiser HD 300 PROtectViscoelastic; replaceable
Sources

Rated frequency response

HyperX Cloud Alpha13 Hz – 27 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 AlphaHeadset, detachable headset cable, detachable microphone, PC extension cable, 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

Rated sensitivity

HyperX Cloud Alpha98 dB SPL/mW at 1 kHz
Sennheiser HD 300 PROtect108 ±3 dB SPL (1 kHz, 1 Vrms)
Sources
HyperX Cloud Alpha

Manufacturer specification · dB/mW reference.

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

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

HyperX Cloud Alpha298 g
Sennheiser HD 300 PROtect297 g
Sources
HyperX Cloud Alpha

Manufacturer specification · HyperX does not state whether the microphone or cable is included. The US page lists 0.65 lb.

HyperX Cloud Alpha – Gaming Headset — official HyperX UK product page and specificationsHyperX Cloud Alpha – 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 (13)

Active noise cancellation

HyperX Cloud AlphaNot verified
Sennheiser HD 300 PROtectNo
Sources
HyperX Cloud Alpha

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 Alpha – 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 AlphaNot verified
Sennheiser HD 300 PROtectNot required: passive wired headphones powered by the audio source
Sources
HyperX Cloud Alpha

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 Alpha – 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.

Rated power

HyperX Cloud AlphaNot verified
Sennheiser HD 300 PROtect500 mW
Sources
HyperX Cloud Alpha

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

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 AlphaDetachable electret condenser, bi-directional, noise-cancelling; −43 dBV (0 dB = 1 V/Pa, 1 kHz)
Sennheiser HD 300 PROtectNot verified
Sources
HyperX Cloud Alpha

Manufacturer specification · HyperX advertises the headset as Discord and TeamSpeak™ Certified for voice communication.

HyperX Cloud Alpha – Gaming Headset — official HyperX UK product page and specifications
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 AlphaNot verified
Sennheiser HD 300 PROtect−15 °C to +55 °C
Sources
HyperX Cloud Alpha

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 AlphaNot verified
Sennheiser HD 300 PROtectUp to 32 dB (passive)
Sources
HyperX Cloud Alpha

No source recorded for this side.

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

Compatibility

HyperX Cloud AlphaPC, PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch, mobile (3.5 mm)
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.

Serviceability

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

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 AlphaNot 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 Alpha

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.

0 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 Alpha

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 Alpha

What it brings

  • HyperX's dual-chamber drivers separate the bass from the mids and highs, which it says is intended to reduce distortion.
  • Both the cable and microphone detach, the cable carries volume and mute controls, and a PC extension cable is included.

What to check

  • The documented audio connection uses a 3.5 mm cable; a PC extension cable is included.
  • The manufacturer’s “noise-cancelling” description applies to the microphone. The reviewed exact sources do not explicitly establish active noise cancellation for listening.

Sennheiser HD 300 PROtect

What it brings

What to check

COMPARE THE DETAILS

Full specifications

How we verify
26 of 26 specifications Sources in each row
Source-backed specifications for HyperX Cloud Alpha and Sennheiser HD 300 PROtect
SpecificationHyperX Cloud AlphaSennheiser HD 300 PROtect
Over-ear (circumaural), closed-back wired gaming headset with aluminium frameOver-ear (circumaural), closed-back wired monitoring headphones
WeightDifferent
Sources
HyperX Cloud Alpha

Manufacturer specification · HyperX does not state whether the microphone or cable is included. The US page lists 0.65 lb.

HyperX Cloud Alpha – Gaming Headset — official HyperX UK product page and specificationsHyperX Cloud Alpha – 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)
298 g297 g
Closed-back, dual-chamber driver designClosed-back
Memory foam with premium leatheretteViscoelastic; replaceable
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 via a detachable braided cable with in-line controls; PC extension cable suppliedWired; 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 Alpha

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 Alpha – 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
Detachable headset cable 4.26 ft with in-line controls; PC extension cable 6.56 ftExchangeable cable on Sennheiser's system connector; Sennheiser describes a coiled cable that filters structure-borne noise at the earpiece
PC, PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch, mobile (3.5 mm)Not provided
Cable length
Sources
HyperX Cloud Alpha

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
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)
Custom dynamic 50 mm with neodymium magnets, dual-chamberDynamic transducers with precision diaphragms
Driver size
Sources
Sennheiser HD 300 PROtect

No source recorded.

50 mmNot provided
Rated frequency responseDifferent
Sources
13 Hz – 27 kHz6–25,000 Hz
65 ohm64 ohm
Rated sensitivityDifferent
Sources
98 dB SPL/mW at 1 kHz108 ±3 dB SPL (1 kHz, 1 Vrms)
<1%<0.1% at 1 kHz, 94 dB SPL
Hearing protection and comfort
Sources
HyperX Cloud Alpha

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 Alpha

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 Alpha

Manufacturer specification · Detachable bi-directional, noise-cancelling electret condenser microphone.

HyperX Cloud Alpha – 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 Alpha

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 Alpha – 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
HyperX Cloud Alpha

Manufacturer specification · HyperX advertises the headset as Discord and TeamSpeak™ Certified for voice communication.

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

No source recorded.

Detachable electret condenser, bi-directional, noise-cancelling; −43 dBV (0 dB = 1 V/Pa, 1 kHz)Not provided
Ambient noise attenuation
Sources
HyperX Cloud Alpha

No source recorded.

Not providedUp to 32 dB (passive)
Headset, detachable headset cable, detachable microphone, PC extension cable, 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
HyperX Cloud Alpha

No source recorded.

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
Logitech G335 wired gaming headset in black with patterned suspension headband and boom microphone

Logitech G335

Impedance
36 Ω
Wearing style
Around-ear wired gaming headset with suspension headband, memory-foam ear cups and a flip-to-mute boom microphone
Wired / wireless connections
Wired 3.5 mm audio jack; PC Y-splitter supplied for separate mic and headphone jacks
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.