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Alienware Pro Wireless vs Sennheiser Massdrop HD 6XX: which should you buy?

On aggregated review scores the Alienware Pro Wireless comes out ahead with a HearWiki score of 86. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Alienware Pro Wireless - Outstanding overall at around $125.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Alienware Pro Wireless leads on 7 of 7 measures.

  • Alienware Pro Wireless
  • Sennheiser Massdrop HD 6XX
HearWiki score
86
74
Sound
8.7
8.6
Noise cancelling
8.1
-
Battery
9.1
-
Calls
8.7
-
Value
8.6
-
Price (USD)
$120
$200

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

The Alienware Pro Wireless is 8 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. The platform is level; the newer hardware shows up in convenience features instead - the Alienware Pro Wireless adds USB-C. For 8 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • Pro Wireless20248 yr newer
  • Massdrop HD 6XX2016
What differsPro WirelessMassdrop HD 6XX

Everyday features

USB-C
Yes
No

Specifications

Pro WirelessMassdrop HD 6XX
Type
Over-Ear
Over-Ear
Price (USD)
$120
$200
HearWiki score
86
74
Released
2024
2016
Availability
Still sold new
Discontinued
Driver
50 mm driver
42 mm dynamic
Driver type
-
dynamic
Driver size
50 mm
42 mm
Drivers per side
1
1
Frequency response
20 Hz - 40 kHz
10 Hz - 41 kHz
Impedance
32 Ω
300 Ω
Sensitivity
-
103 dB/mW
Bluetooth
5.3
-
Codecs
SBC
-
Multipoint pairing
No
-
Battery life
70 h
-
Battery life (ANC on)
35 h
-
Quick charge
15 min → 6 h
-
Active noise cancelling
Yes
No
Transparency mode
Yes
-
Weight
310 g
260 g
Detachable cable
-
Yes
USB-C
Yes
No
Pad material
leatherette
-
Clamp force
365 g
-
Connector
-
3.5 mm
Microphones
2
-
Call noise reduction
Yes
-
Call NR technology
AI ENC
-

What reviewers said

Alienware Pro Wireless

Its leatherette pads and moderate 310g weight aim for comfort during long sessions, while the 2.4GHz wireless option and USB-C charging add versatility for desk and on-the-go use. Sound quality is generally strong, but the microphone performance and a single SBC codec limit keep it from being a flawless all-rounder.

  • Pro:Excellent battery life, especially with ANC off
  • Pro:Comfortable leatherette ear pads for long wear
  • Pro:Active noise cancellation and transparency mode included
  • Con:Microphone quality is underwhelming for the price
  • Con:Only SBC codec support limits high-res wireless audio
  • Con:No multipoint connection for seamless device switching

Sennheiser Massdrop HD 6XX

The Sennheiser Massdrop HD 6XX are open-back, wired over-ear headphones offering a neutral, mid-focused sound signature with excellent clarity and well-matched drivers for accurate imaging. They are lightweight and comfortable for long sessions, with a detachable cable and included adapter, but their 300-ohm impedance means they need a decent amplifier to perform at their best. As a budget-friendly take on the classic HD 650, they deliver strong audiophile value rather than bass-heavy impact or portability.

  • Pro:Accurate, neutral sound with strong midrange clarity
  • Pro:Lightweight and comfortable for extended listening
  • Pro:Detachable cable and 3.5mm adapter included
  • Con:High 300-ohm impedance requires a capable amp
  • Con:Open-back design leaks sound and offers no isolation
  • Con:Limited soundstage and not very impactful bass

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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New comparisonAlienware Pro WirelessSennheiser Massdrop HD 6XX