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1 / 7@sage_lagoon_33 · Photo-verified
Owned 1–6 months · Still using it: yes, daily · Posted
Very light, comfort 10/10, can go for days non stop gaming without problems, insane build quality all around, microphone and sound quality OUT of this world for a gaming headset. The best headset I've ever owned, and I've had plenty good and popular headsets/headphones. FPS gamer
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beyerdynamic MMX 300 PRO closed gaming headset with Stellar.45 driver
A 2.1 puts its audio quality in the bottom 10% of gaming headsets we've measured.
Measured on 18 of the 152 we've cataloged.
Would buy it again and still uses it daily.
Owned 1–6 months.
Wired-3.5mm is the most common — on 34% of the 206 gaming headsets we've cataloged (of 152).
Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 0.7 |
| 25 | 1.4 |
| 32 | 2.0 |
| 40 | 2.5 |
| 50 | 2.4 |
| 63 | -0.9 |
| 80 | 0.7 |
| 100 | 2.1 |
| 125 | 2.1 |
| 160 | -0.5 |
| 200 | -4.6 |
| 250 | -7.1 |
| 315 | -5.0 |
| 400 | -3.6 |
| 500 | -1.9 |
| 630 | -1.6 |
| 800 | -0.6 |
| 1000 | 0.0 |
| 1250 | 0.5 |
| 1600 | 1.4 |
| 2000 | 5.1 |
| 2500 | 5.8 |
| 3150 | 1.3 |
| 4000 | 5.2 |
| 5000 | 10.4 |
| 6300 | 12.1 |
| 8000 | 10.3 |
| 10000 | 3.1 |
| 12500 | 0.3 |
| 16000 | -8.7 |
| 20000 | -8.6 |
Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | -1.4 |
| 26 | -0.4 |
| 33 | -0.9 |
| 41 | -0.5 |
| 52 | 0.0 |
| 65 | -0.4 |
| 82 | -1.8 |
| 103 | -2.1 |
| 130 | -2.1 |
| 163 | -2.4 |
| 205 | -0.4 |
| 259 | 3.4 |
| 325 | 9.2 |
| 410 | 8.4 |
| 516 | 9.5 |
| 613 | 10.7 |
| 772 | 10.5 |
| 972 | 11.9 |
| 1220 | 12.3 |
| 1540 | 13.2 |
| 1940 | 10.5 |
| 2440 | 14.6 |
| 3070 | 21.6 |
| 3870 | 21.6 |
| 4870 | 25.4 |
| 6130 | 35.5 |
| 7720 | 33.8 |
| 9720 | 33.6 |
| 12200 | 34.3 |
| 15400 | 33.0 |
| 19400 | 34.4 |
Multi-Dimensional Audio Quality Scores (1–5), modeled from the measured response. Higher is better across timbre, distortion, and immersiveness — add other models to see where this one lands.
The verdict
The Beyerdynamic MMX 300 Pro offers audiophile-grade sound for gaming and an excellent mic in a comfortable wired package, ideal for serious gamers who prioritize audio fidelity over bass-heavy tuning and wireless convenience.
✓Liked: Gaming sound quality, Microphone clarity, Comfortable, Removable ear pads and headband
✕Could be better: Music sound quality, Not portable, Potential for sibilance in treble range
What a reader who owns the beyerdynamic MMX 300 PRO reports after living with it. Owner-reported, checked before publishing; ordered photo-verified first, then newest.
Owner reviews are not paid for, not solicited from specific owners, and not edited by us. The commission SoundGuys may earn on this page comes from retail links, never from owner reviews.
1 owner review
Every author writes under a generated pseudonym. A signed-in author’s email is never shown. Read more · A moderator saw a photo of this reader’s unit and it matched the product. Proof of possession, not purchase. Read more · Owned 1–6 months · Still using it: yes, daily · Posted
Would buy againVery light, comfort 10/10, can go for days non stop gaming without problems, insane build quality all around, microphone and sound quality OUT of this world for a gaming headset. The best headset I've ever owned, and I've had plenty good and popular headsets/headphones. FPS gamer
Commentary and deep dives from the SoundGuys editorial team.
Christian ThomasEditor-at-large5 ways headphones are going to change in 2027Here's where things are headed.Christian ThomasEditor-at-largeWired vs wireless headphones: Which should you buy?Wired headphones do not automatically sound better.
Tom TriggsContributor
1 of 1 would buy again
1 owner
Expected more from the mic
