HEADPHONES · YOUR NEXT FACE-OFF

HyperX Cloud Alpha Wireless vs Sennheiser MOMENTUM 4 Wireless

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

Compared products

YOUR FIRST CHOICE

HyperX Cloud Alpha Wireless

4P5D4AA · Black-Red · 2.4 GHz wireless

Full product profile Official image

Exact model & source notes

The HyperX Cloud Alpha Wireless (SKU 4P5D4AA, black and red) is a closed-back, over-ear 2.4 GHz wireless gaming headset with 50 mm dual-chamber drivers, an aluminium frame, onboard volume, mic-mute and mic-monitoring controls and a detachable Discord and TeamSpeak-certified noise-cancelling microphone. HyperX NGENUITY software checks battery life and adjusts the equalizer, and HyperX rates the battery at up to 300 hours at 50% volume.

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 HyperX Cloud Alpha Wireless for

Higher stated impedance: 62 ohm vs 60 ohm

Choose the Sennheiser MOMENTUM 4 Wireless for

Both wired and wireless connections
Lower stated impedance: 60 ohm vs 62 ohm

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

See the 13 verified differences

THE CONTENDER

Sennheiser MOMENTUM 4 Wireless

Black · model M4AEBT

Full product profile Official image

Exact model & source notes

The MOMENTUM 4 Wireless (article 509266, black) is Sennheiser's closed-back, around-ear Bluetooth headphone with hybrid adaptive noise cancellation, a Transparency Mode, a 42 mm dynamic driver and a rated 60 hours of playback with ANC on. Sennheiser's app adds EQ, presets, sound modes and Sound Personalization, and Smart Pause and Auto On/Off react to the headphones being taken off. It also plays over USB-C from a computer or over a supplied analogue cable.

Specifications checked 26 Sept 2026.

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

Manufacturer specifications

HyperX Cloud Alpha Wireless UK & US retailers

UK & US price history: no verified listing yet

Sennheiser MOMENTUM 4 Wireless 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 Alpha Wireless62 Ω

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

Source 1

Sennheiser MOMENTUM 4 Wireless60 Ω

Manufacturer specification · Passive (analogue cable) mode; the page lists 470 ohms in active mode.

Source 1

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 ↓

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

Acoustic design

HyperX Cloud Alpha WirelessClosed-back, dual-chamber driver design

Sennheiser MOMENTUM 4 WirelessClosed-back

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Wired / wireless connections

HyperX Cloud Alpha Wireless2.4 GHz wireless via the supplied USB wireless adapter; USB cable for charging

Sennheiser MOMENTUM 4 WirelessBluetooth 5.2 (SBC, AAC, aptX Adaptive); USB-C for charging, calls and streaming from a PC/Mac; 2.5 mm analogue input with supplied 2.5 mm-to-3.5 mm cable

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX lists no Bluetooth and no analogue input; the supplied cable is described as a charge cable.

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Connecting the analogue cable switches Bluetooth off (flight mode). The UK product page additionally lists standard aptX.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Battery life

HyperX Cloud Alpha WirelessUp to 300 hours; about 4.5 hours to charge

Sennheiser MOMENTUM 4 WirelessUp to 60 hours of Bluetooth music playback with ANC on; approx. 2 hours to charge fully, with 5 minutes giving up to 4 hours

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX's test condition: 50% headphone volume. The charge time appears on the US page only. Manufacturer footnote [2] describes a fully charged headset plugged via USB to a system, with system and media-player volume at 50%; it does not clearly identify whether that USB wording refers to the headset or its wireless adapter. Retain the rated battery claim, but the exact test connection remains unresolved.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Sennheiser's test condition: iPhone at mid volume. Built-in 700 mAh battery (the manual and UK page disagree on its chemistry).

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Manufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.

Impedance

In Visual facts

HyperX Cloud Alpha Wireless62 ohm

Sennheiser MOMENTUM 4 Wireless60 ohm

Sources

HyperX Cloud Alpha Wireless

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

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Passive (analogue cable) mode; the page lists 470 ohms in active mode.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications

Check the exact configuration and source conditions for your use.

Driver construction

HyperX Cloud Alpha WirelessDynamic, 50 mm with neodymium magnets, dual-chamber

Sennheiser MOMENTUM 4 Wireless42 mm dynamic transducer

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Software controls

HyperX Cloud Alpha WirelessHyperX NGENUITY software: battery-life check, equalizer and further customisation

Sennheiser MOMENTUM 4 WirelessSennheiser Smart Control app: built-in EQ, presets, sound modes (e.g. bass boost) and Sound Personalization

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Requires the Sennheiser app on a smartphone; the product page also names it Smart Control Plus.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Show 7 more verified differences

Controls

HyperX Cloud Alpha WirelessOnboard audio controls for volume, mic mute and mic monitoring

Sennheiser MOMENTUM 4 WirelessTouch pad on the right ear cup (tap, horizontal and vertical swipe, stretch and pinch gestures) and a multi-function button; Smart Pause pauses playback when the headphones are taken off and resumes when they are put back on; Auto On/Off powers up when picked up and shuts down when not in use; automatic wind noise reduction

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Sennheiser describes the touch interface as controlling music, calls, ANC and voice assistants; the manual adds volume (vertical swipe) and switching between ANC and Transparency Mode (double tap), and says the touch pad function can be deactivated in the Smart Control app. The multi-function button is the on/off, voice assistant and pairing button. Wind Noise Reduction is set in the Smart Control app's Active Noise Cancellation section (Off, Auto by default, or Max); the UK page describes automatic wind noise suppression for calls.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser US store — MOMENTUM 4 Wireless product variant data (SKU and UPC per colour)Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Wearing style

HyperX Cloud Alpha WirelessOver-ear (circumaural), closed-back wireless gaming headset with aluminium frame

Sennheiser MOMENTUM 4 WirelessOver-ear (circumaural), closed-back wireless headphones with a foldable design

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Sennheiser's US store describes a 'Lightweight, foldable design'; the instruction manual says to fold up the headphones and place them in the carry case.

Sennheiser US store — MOMENTUM 4 Wireless product variant data (SKU and UPC per colour)Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Rated total harmonic distortion

HyperX Cloud Alpha Wireless≤ 2%

Sennheiser MOMENTUM 4 Wireless<0.3% at 1 kHz, 100 dB SPL

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Rated frequency response

HyperX Cloud Alpha Wireless15 Hz – 21 kHz

Sennheiser MOMENTUM 4 Wireless6–22,000 Hz (−10 dB)

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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 Alpha WirelessHeadset, USB wireless adapter, USB charge cable, detachable microphone, pop filter, quick start guide

Sennheiser MOMENTUM 4 WirelessHeadphones, USB-C to USB-A cable (approx. 1.2 m), 2.5 mm-to-3.5 mm audio cable (approx. 1.2 m), in-flight adapter, carry case

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

Check the exact configuration and source conditions for your use.

Rated sensitivity

HyperX Cloud Alpha Wireless103 dB SPL/mW at 1 kHz

Sennheiser MOMENTUM 4 Wireless106 dB SPL (1 kHz, 0 dBFS)

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · dB/mW reference.

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

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Digital full-scale reference; not comparable with passive headphones' dB/mW or dB/V ratings.

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Weight

HyperX Cloud Alpha Wireless322 g

Sennheiser MOMENTUM 4 Wireless293 g

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX does not state whether the microphone is included. The US page lists 0.7 lb.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Approximate, headphones only; the manual does not state a cable-inclusive figure.

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Missing or non-comparable evidence (15)

Active noise cancellation

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessYes

Sources

HyperX Cloud Alpha Wireless

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 – Wireless Gaming Headset — official HyperX UK product page and specifications

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Hybrid adaptive ANC with a Transparency Mode.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Battery

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessBuilt-in, 3.7 V, 700 mAh, 2.59 Wh

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Capacity agrees across sources (manual 700 mAh, 2.59 Wh; UK page 700 mAh); the chemistry does not, see battery chemistry.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Battery chemistry

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessConflicting evidence

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

The instruction manual states a built-in rechargeable lithium-polymer battery; the UK product page states 'Built-in Lithium-Ion rechargeable batteries 700 mAh'. · Manufacturer specification

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Bluetooth codecs

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessSBC, AAC, aptX, aptX Adaptive

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Standard aptX is listed on the UK product page ('SBC, AAC, aptX™, aptX adaptive™'); the instruction manual lists only aptX Adaptive, AAC and SBC.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Charging

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessUSB-C; approx. 2 hours for a full charge

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · The maximum charging input differs between Sennheiser's sources: the instruction manual lists 5 V, 750 mA max; the UK product page lists 5 V, 800 mA max. Neither figure is chosen.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Driver size

HyperX Cloud Alpha Wireless50 mm

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

Ear cushions

HyperX Cloud Alpha WirelessMemory foam with premium leatherette

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

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

Sennheiser MOMENTUM 4 Wireless

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 Alpha WirelessDetachable electret condenser, bi-directional, noise-cancelling; −15 dBFS/Pa at 1 kHz

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX describes the detachable microphone as Discord and TeamSpeak-certified.

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

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

Simultaneous Bluetooth connections

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 Wireless2

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Operating temperature

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 Wireless0 °C to +40 °C

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25

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

Compatibility

HyperX Cloud Alpha WirelessConflicting evidence

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

HyperX's UK and US pages list 'Compatibility: PC' in the specification summary, but the same pages' key-feature list advertises 'Multi-platform compatibility' without naming the platforms. Check the listing for console or mobile support. · Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

Spatial audio

HyperX Cloud Alpha WirelessDTS Headphone:X spatial audio

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX's official US product-page gallery for the Black-Red 4P5D4AA includes an image (03, file hyperx_cloud_alpha_wireless_red_annotated_2_dts_en.jpg) captioned 'DTS® Headphone:X® Spatial Audio', and the UK product page carries a DTS and Headphone:X trademark footnote. Neither page's text describes how it is enabled or on which platforms it works.

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

Transparency (ambient) mode

HyperX Cloud Alpha WirelessNot verified

Sennheiser MOMENTUM 4 WirelessYes

Sources

HyperX Cloud Alpha Wireless

No source recorded for this side.

Sennheiser MOMENTUM 4 Wireless

Manufacturer specification · Activated with a touch, according to Sennheiser's UK product page.

Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications

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

USB audio

HyperX Cloud Alpha WirelessUSB 2.0, 24-bit

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

Wireless range

HyperX Cloud Alpha WirelessUp to 20 m

Sennheiser MOMENTUM 4 WirelessNot verified

Sources

HyperX Cloud Alpha Wireless

Manufacturer specification · HyperX notes range may vary with environmental conditions.

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

Sennheiser MOMENTUM 4 Wireless

No source recorded for this side.

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

1 shared field has 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

HyperX Cloud Alpha Wireless

Select a feature to check your fit.

YOUR CHOICE

Sennheiser MOMENTUM 4 Wireless

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 Wireless

What it brings

HyperX rates the battery at up to 300 hours (tested at 50% headphone volume), with a full charge taking about 4.5 hours according to the US page.
Manufacturer source Manufacturer source
The detachable microphone has an LED status indicator, and HyperX lists a wireless range of up to 20 m.
Manufacturer source

What to check

The specification summary names PC, while a feature bullet claims multi-platform compatibility without naming platforms. The documented audio connection uses the 2.4 GHz USB adapter; other input support is not explicitly established.
Manufacturer source Manufacturer source
The manufacturer’s “noise-cancelling” description applies to the microphone. The reviewed exact sources do not explicitly establish active noise cancellation for listening.
Manufacturer source Manufacturer source

Sennheiser MOMENTUM 4 Wireless

What it brings

Sennheiser rates the battery at up to 60 hours of Bluetooth playback with ANC switched on, with about 2 hours for a full charge and 5 minutes giving up to 4 hours.
Manufacturer source Manufacturer source
Besides Bluetooth 5.2 with aptX Adaptive and two simultaneous connections, it accepts USB-C audio from a PC or Mac and an analogue cable for flight use.
Manufacturer source

What to check

The analogue input is a 2.5 mm socket, so the supplied cable (or a similar one) is needed; plugging it in turns Bluetooth off.
Manufacturer source
Sennheiser rates the mass at about 293 g for the headphones alone, and its 106 dB sensitivity figure uses a digital full-scale reference, so it cannot be compared with passive headphones' ratings.
Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

29 of 29 specifications Sources in each row

Source-backed specifications for HyperX Cloud Alpha Wireless and Sennheiser MOMENTUM 4 Wireless
Specification	HyperX Cloud Alpha Wireless	Sennheiser MOMENTUM 4 Wireless

Wearing styleDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Sennheiser's US store describes a 'Lightweight, foldable design'; the instruction manual says to fold up the headphones and place them in the carry case. Sennheiser US store — MOMENTUM 4 Wireless product variant data (SKU and UPC per colour)Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Over-ear (circumaural), closed-back wireless gaming headset with aluminium frame	Over-ear (circumaural), closed-back wireless headphones with a foldable design
WeightDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX does not state whether the microphone is included. The US page lists 0.7 lb. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Approximate, headphones only; the manual does not state a cable-inclusive figure. Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	322 g	293 g
Acoustic designDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Closed-back, dual-chamber driver design	Closed-back
Ear cushions Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	Memory foam with premium leatherette	Not provided

Wired / wireless connectionsDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX lists no Bluetooth and no analogue input; the supplied cable is described as a charge cable. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Connecting the analogue cable switches Bluetooth off (flight mode). The UK product page additionally lists standard aptX. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	2.4 GHz wireless via the supplied USB wireless adapter; USB cable for charging	Bluetooth 5.2 (SBC, AAC, aptX Adaptive); USB-C for charging, calls and streaming from a PC/Mac; 2.5 mm analogue input with supplied 2.5 mm-to-3.5 mm cable
Battery lifeDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX's test condition: 50% headphone volume. The charge time appears on the US page only. Manufacturer footnote [2] describes a fully charged headset plugged via USB to a system, with system and media-player volume at 50%; it does not clearly identify whether that USB wording refers to the headset or its wireless adapter. Retain the rated battery claim, but the exact test connection remains unresolved. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Sennheiser's test condition: iPhone at mid volume. Built-in 700 mAh battery (the manual and UK page disagree on its chemistry). Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Up to 300 hours; about 4.5 hours to charge	Up to 60 hours of Bluetooth music playback with ANC on; approx. 2 hours to charge fully, with 5 minutes giving up to 4 hours
Wireless range Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX notes range may vary with environmental conditions. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	Up to 20 m	Not provided
USB audio Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	USB 2.0, 24-bit	Not provided
Bluetooth codecs Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Standard aptX is listed on the UK product page ('SBC, AAC, aptX™, aptX adaptive™'); the instruction manual lists only aptX Adaptive, AAC and SBC. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	SBC, AAC, aptX, aptX Adaptive
Simultaneous Bluetooth connections Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	2
Charging Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification · The maximum charging input differs between Sennheiser's sources: the instruction manual lists 5 V, 750 mA max; the UK product page lists 5 V, 800 mA max. Neither figure is chosen. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	USB-C; approx. 2 hours for a full charge
Battery Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Capacity agrees across sources (manual 700 mAh, 2.59 Wh; UK page 700 mAh); the chemistry does not, see battery chemistry. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	Built-in, 3.7 V, 700 mAh, 2.59 Wh

Driver constructionDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Dynamic, 50 mm with neodymium magnets, dual-chamber	42 mm dynamic transducer
Driver size Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	50 mm	Not provided
Rated frequency responseDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	15 Hz – 21 kHz	6–22,000 Hz (−10 dB)
ImpedanceDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification · Listed on the UK page; the US page omits impedance. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Passive (analogue cable) mode; the page lists 470 ohms in active mode. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications	62 ohm	60 ohm
Rated sensitivityDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification · dB/mW reference. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Digital full-scale reference; not comparable with passive headphones' dB/mW or dB/V ratings. Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	103 dB SPL/mW at 1 kHz	106 dB SPL (1 kHz, 0 dBFS)
Rated total harmonic distortionDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	≤ 2%	<0.3% at 1 kHz, 100 dB SPL
Spatial audio Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX's official US product-page gallery for the Black-Red 4P5D4AA includes an image (03, file hyperx_cloud_alpha_wireless_red_annotated_2_dts_en.jpg) captioned 'DTS® Headphone:X® Spatial Audio', and the UK product page carries a DTS and Headphone:X trademark footnote. Neither page's text describes how it is enabled or on which platforms it works. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	DTS Headphone:X spatial audio	Not provided

Microphone Sources HyperX Cloud Alpha Wireless Manufacturer specification · Detachable bi-directional, noise-cancelling microphone with LED status indicator; pop filter supplied. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Four MEMS speech microphones in a 2 × 2 beamforming array for calls. Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Yes	Yes
Active noise cancellation Sources HyperX Cloud Alpha Wireless 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 – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Hybrid adaptive ANC with a Transparency Mode. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not listed by the manufacturer	Yes
Microphone Sources HyperX Cloud Alpha Wireless Manufacturer specification · HyperX describes the detachable microphone as Discord and TeamSpeak-certified. HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	Detachable electret condenser, bi-directional, noise-cancelling; −15 dBFS/Pa at 1 kHz	Not provided
Transparency (ambient) mode Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Activated with a touch, according to Sennheiser's UK product page. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications	Not provided	Yes

ControlsDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Sennheiser describes the touch interface as controlling music, calls, ANC and voice assistants; the manual adds volume (vertical swipe) and switching between ANC and Transparency Mode (double tap), and says the touch pad function can be deactivated in the Smart Control app. The multi-function button is the on/off, voice assistant and pairing button. Wind Noise Reduction is set in the Smart Control app's Active Noise Cancellation section (Off, Auto by default, or Max); the UK page describes automatic wind noise suppression for calls. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser US store — MOMENTUM 4 Wireless product variant data (SKU and UPC per colour)Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Onboard audio controls for volume, mic mute and mic monitoring	Touch pad on the right ear cup (tap, horizontal and vertical swipe, stretch and pinch gestures) and a multi-function button; Smart Pause pauses playback when the headphones are taken off and resumes when they are put back on; Auto On/Off powers up when picked up and shuts down when not in use; automatic wind noise reduction
Software controlsDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification · Requires the Sennheiser app on a smartphone; the product page also names it Smart Control Plus. Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	HyperX NGENUITY software: battery-life check, equalizer and further customisation	Sennheiser Smart Control app: built-in EQ, presets, sound modes (e.g. bass boost) and Sound Personalization

In the boxDifferent Sources HyperX Cloud Alpha Wireless Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Headset, USB wireless adapter, USB charge cable, detachable microphone, pop filter, quick start guide	Headphones, USB-C to USB-A cable (approx. 1.2 m), 2.5 mm-to-3.5 mm audio cable (approx. 1.2 m), in-flight adapter, carry case

Operating temperature Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless Manufacturer specification Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	0 °C to +40 °C

Show unverified (2)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
Compatibility Sources HyperX Cloud Alpha Wireless HyperX's UK and US pages list 'Compatibility: PC' in the specification summary, but the same pages' key-feature list advertises 'Multi-platform compatibility' without naming the platforms. Check the listing for console or mobile support. · Manufacturer specification HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX UK product page and specifications HyperX Cloud Alpha – Wireless Gaming Headset — official HyperX US product page and technical specifications Sennheiser MOMENTUM 4 Wireless No source recorded.	Conflicting sources	Not provided
Battery chemistry Sources HyperX Cloud Alpha Wireless No source recorded. Sennheiser MOMENTUM 4 Wireless The instruction manual states a built-in rechargeable lithium-polymer battery; the UK product page states 'Built-in Lithium-Ion rechargeable batteries 700 mAh'. · Manufacturer specification Sennheiser MOMENTUM 4 Wireless — official UK product page and specifications Sennheiser MOMENTUM 4 (M4AEBT) — instruction manual, version 07/25	Not provided	Conflicting sources

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.