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Beyerdynamic MMX 330 Pro Review

The Beyerdynamic MMX 330 Pro is an excellent wired gaming headset that focuses on simplicity and sound quality.
Beyerdynamic MMX 330 Pro Review

Disclosure: The MMX 330 Pro was provided by Beyerdynamic for this review. Please read more about our product review disclosure here.

The Beyerdynamic MMX 330 Pro sits at $329 USD, placing it firmly in premium gaming headset territory. My initial skepticism about the price faded once I learned Beyerdynamic packed their Stellar.45 studio drivers into this gaming headset. The same drivers power their high-end studio monitoring Pro X headphones, signaling serious audio ambitions beyond what you would find in typical gaming gear.

The MMX 330 Pro aims to bridge professional audio quality with gaming functionality – a bold goal that deserves a thorough examination. The real question: Do the studio heritage and gaming features justify spending over $300 on a wired gaming-oriented headset? Read on further into my review to find out.


Key Specifications

  • Type: Over-ear, open-back
  • Driver Type: Dynamic, 45mm
  • Frequency Response: 5 Hz – 40 kHz
  • Impedance: 48 ohms
  • Sensitivity: 96 dB
  • Weight:  318g
  • Connection: 3.5mm
  • Detachable Cable: Yes
  • Microphone: Yes, not detachable

In the Box

  • Beyerdynamic MMX 330 Pro
  • 3.5mm to 2x 3-pole cable, 2.5 meters
  • 2x 3-pole to single 3.5mm adapter
  • Microphone pop filter
  • Manual

Design & Comfort

The MMX 330 Pro showcases Beyerdynamic’s German engineering prowess through its open-back design. The metal frame feels premium, while thoughtfully designed ear cups hint at the headset’s studio heritage. While the overall design and shape of the MMX 330 Pro are similar to that of its studio open-back brethren the DT 900 Pro X, the two distinct differences are the addition of a non-detachable microphone and a distinctly different earcup cover.

The outside of the MMX 330 Pro’s earcups have four open slits on them to indicate their open-back nature, with the microphone being located on the left earcup. The pads being used are black velour pads with a good amount of thickness to them and are of course detachable and replaceable. The headband is metal with a removable memory foam padded leather cover.

Overall comfort is very good, which should be expected given that Beyerdynamic headphones are typically known for being comfortable to wear for long periods of time. The earpads have the right amount of thickness and cushioning, and the headband’s memory foam has just the right amount as well. The headband rests comfortably on the top of my head, and I did not encounter any aching or discomfort. The headphones are also fairly light at 318 grams, with excellent weight distribution.

I have two issues though with the overall design. One, the earcups themselves are not as deep as I’d like. I have average-sized ears and they slightly touch the inside of the earcup, which took some getting used to. Secondly, the microphone is not removable. This means that when not being used you have to flip it up to get it out of the way, and it looks rather silly in this position. I would have much preferred a detachable microphone. Since we already have a detachable cable I’m not sure why this couldn’t be achieved. It’s not a new issue either, the MMX 300 2nd Generation I looked at in 2023 also didn’t have a detachable microphone, yet something like the MMX 100 does.

Despite those two issues, the overall design and comfort of the MMX 330 Pro is great, and much better than what you typically find in the gaming headset category.


Features

Detachable Cable

The MMX 330 Pro comes with a very long detachable cable that is 2.5 meters in length. It has a rubber texture and is very springy with little to no memory to it. It connects to the headset via a single 3.5mm connection on one end and splits into separate 3.5mm TRS audio and microphone connections on the other end. This is great if you have a DAC that dedicated audio and microphone connections, allowing fine-tuned control of both.

Included is an adapter that takes both of those connections and combines them into a single 3.5mm TRRS connection. This is great if you want to plug the headset into a game controller, or if your DAC or device only has a combined headphone/microphone connection. Note that, when using the adapter, since it is a TRRS connection you may get some crosstalk when using it. I didn’t really notice it in my tests, but it’s something to be aware of (not just for this headset, but for any that uses that kind of connection).

The cable has an in-line volume control with a mute button. While it is much better than the one found on the MMX 300 2nd Generation, it still feels cheap for a gaming headset priced above $300. It’s plastic and cheap feeling, though the volume wheel is stiff enough to avoid any accidental volume changes. The mute button feels solid and tactile, but overall it’s underwhelming for the price.

Lastly, I noticed no microphonics when using the cable.

Microphone

Yes, I already complained about the microphone not being detachable, but I’m going to complain here again about it. This is the type of headset that you would want to be able to use not only for gaming but for listening to music and watching movies, and the microphone not being detachable simply limits the versatility in my opinion.

With that out of the way, the microphone itself has a good overall design, being able to bend whichever way you want it. The arm that connects the microphone to the earcup can move up or down in segmented notches and solidly stays in place. Sadly though, there is no flip to mute when the microphone is in the up position, so you’ll need to remember to mute yourself when it’s not in use.

The actual microphone sound quality is excellent, especially when the pop filter is used. It doesn’t pick up too much room noise, instead emphasizing voice and natural tone. Using something like Nvidia Broadcast (if you have an Nvidia GPU) with this microphone really makes this a powerful combo as Broadcast can remove any echo or additional room noise. I use it with all the microphones I use when gaming and so far the MMX 330 Pro has sounded the clearest with it.


Sound Quality

Sources used for this review:

  • Sony NW-WM1AM2
  • iFi ZEN DAC V2
  • Nintendo Switch
  • Razer Blade laptop
  • PlayStation 5 controller, Xbox One controller

Music playlist used for the majority of testing: https://music.apple.com/ca/playlist/hifi-oasis-audio-testing/pl.u-lKWlcjy04xp

Since the Beyerdynamic MMX 330 Pro uses the Stellar.45 drivers, expectations are high for the sound quality of this headset. Before getting into those details though, let’s first look at the specs.

The MMX 330 Pro has an impedance rating of 48 ohms with a sensitivity of 96 dB, meaning it is not very hard to drive. This is great as it means you can plug it into game controllers, game consoles, smartphones, and laptops and still get excellent volume and sound quality. I had no issues with volume or clarity when using it with a Nintendo Switch, PS5 controller, Xbox One controller, and my 2021 Razer Blade laptop.

The MMX 330 Pro has an overall balanced sound profile. Bass it tight and well extended with lots of texture, with an added emphasis on the sub-bass. The midrange is fairly neutral, and has presence but is not forward. Finally, the treble has a bit of sparkle but isn’t piercing or sibilant. The soundstage is very wide and deep, and fairly tall. Imaging performance is simply excellent here with accurate placement and layering.

Gaming Performance

Games used for testing (played on Windows 11 PC unless otherwise noted):

  • Call of Duty Warzone/Modern Warfare III multiplayer
  • Skyrim
  • Cyberpunk 2077
  • Soma
  • God of War (PlayStation 5)

The spatial awareness capabilities genuinely impressed me in competitive games. Playing Call of Duty: Warzone enemy positions became almost instinctive to track. The open-back design creates this natural sense of space, and the wider soundstage doesn’t compress sound effects, making positional audio sound more organic. Gunshots had good weight and clarity, with accurate positioning in the soundscape. Footsteps also were clear and accurate, making them very easy to locate.

When playing a game like Skyrim the atmospheric effects are well-placed and immersive. Sound effects like swords have appropriate sharpness to them, as do the deepness of enemy growls. Everything just sounds like it should, really.

Music Performance

The Stellar.45 drivers deliver impressive musical performance. The bass is controlled and not overwhelming, with lots of texture and body. Since the bass on the MMX 330 Pro has a mid-bass focus you get appropriate impacts when the track calls for it, but there is little residual roll-off. The midrange is clear and detailed, with vocals being natural and noticeable but not forward. Treble can be slightly peaky in some songs, but there’s a nice sparkle here and most of the time it’s not fatiguing.


Final Thoughts

The MMX 330 Pro surprised me during my testing. The studio-grade Stellar.45 drivers and open-back design create this wonderfully natural soundstage that works beautifully for both gaming and music. The $329 price tag initially seemed steep, but the German engineering and replaceable components make this feel like a proper long-term investment.

Competitive gamers will appreciate the precise positional audio and crystal-clear team chat. The lighter weight compared to something like the Audeze Maxwell means I can wear these for hours without discomfort. Cross-platform compatibility worked flawlessly in my tests, from PC to consoles to mobile devices, thanks to the included adapter.

The MMX 330 Pro won’t suit everyone though. Bass-heads should look elsewhere, and the wired-only design might frustrate those wanting wireless freedom. The open-back design also means sound leakage, meaning audio can be heard coming from the headset (less so than most other open-back headphones though), and environmental noise can be easily heard through the headset.

Still, I found myself reaching for the MMX 330 Pro over other headsets I have, especially for competitive gaming sessions in Call of Duty and Halo. The combination of overall comfort, audio precision, and that broadcast-quality mic makes it my top pick in the premium gaming headset category. If you prioritize sound quality and positional accuracy over wireless convenience, the Beyerdynamic MMX 330 Pro delivers great value despite its premium price.

Buy from Amazon: https://amzn.to/4jCQRdZ

Check prices from other stores: https://geni.us/HPejme

HiFi Oasis Highly Recommended

I’m not always able to cover all the details of a product, both hardware and software, in our reviews. If you have any specific questions you’d like answered about this product please feel free to leave a comment or contact me directly.

Be sure to check out our excellent Buyer’s Guides, as well as our other Reviews.

HiFi Oasis Verdict

HiFi Oasis Verdict
8 10 0 1
  • Design & Comfort
    7/10 Good
  • Sound
    9/10 Amazing
  • Features
    8/10 Very good
8/10
Total Score

Pros

  • Great build quality
  • Balanced, detail focused sound profile
  • Microphone quality is excellent
  • Easy to drive
  • Can be used gaming, music, and movies, making it very versatile
  • Overall very comfortable

Cons

  • Microphone is not detachable, with no flip to mute
  • Earcups may be uncomfortable for those with larger ears
  • On the more expensive side for a wired, gaming focused headset
Total
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