
beyerdynamic MMX 300 2nd Gen
Score: 89/100
Cooler Master MH-670
Score: 87/100Rankings

The Beyerdynamic MMX 300 (2nd Gen) is a premium wired gaming headset delivering audiophile-grade audio fidelity, a studio-quality condenser mic and robust German-engineered build quality, aimed at gamers and audio enthusiasts who prioritize sound accuracy over price. Its lack of wireless capability, high cost and some ergonomic quirks keep it from mainstream appeal.

The Cooler Master MH670 offers a premium build with low-latency 2.4 GHz wireless, virtual 7.1 surround and solid audio performance, making it a versatile choice for multi-platform gamers. Its drawbacks include an average mic, micro-USB charging and the need to enable surround manually.
| Attribute | ![]() | ![]() |
|---|---|---|
57 mmbest | 50 mm | |
5 Hz | 15 Hzbest | |
35,000 Hzbest | 25,000 Hz | |
96 dB | 110 dBbest | |
| ↓ lower better | 332 gbest | 346.5 g |
| ↓ lower better | 32 ohmsbest | 32 ohmsbest |
— | -40 dBbest | |
— | 50 Hzbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(4) | ||
Driver Size (mm) | 57 mm | 50 mm |
Frequency Response (Low) (Hz) | 5 Hz | 15 Hz |
Frequency Response (High) (Hz) | 35000 Hz | 25000 Hz |
Sensitivity (dB) | 96 dB | 110 dB |
Microphone(1) | ||
Microphone Type | condenser cardioid | Detachable flexible boom mic |
Connectivity(3) | ||
Wireless Capability | false | true |
Cable Length (m) | 2.5 m | 1.5 m |
Supported Platforms | PC, Mac, PS4, Xbox One, Mobile | PC, PS4, Xbox One, Nintendo Switch, mobile devices |
Build & Design(1) | ||
Weight (g) | 332 g | 346.5 g |

Products in the top-left offer the best value (high score, low price).

Professional reviewers consistently highlight the MMX 300's benchmark-level audio fidelity, studio-grade microphone, and German-engineered build quality, awarding it high scores for sound and mic performance while criticizing its steep price and modest comfort scores.
Everyday users praise the headset for its amazing, studio-quality sound and crystal-clear microphone, noting its durability and premium accessories. Common complaints focus on low maximum volume without a DAC, the finicky recessed 3.5 mm port and occasional ear-pad irritation.

“everyone comments that I sound like I'm in a studio”

“amazing”

“Low maximum volume without a DAC is frustrating”




Professional reviewers rate the MH670 around 4/5, noting its premium construction, solid audio fidelity, and versatile dual-connectivity as standout strengths, while pointing out the average microphone and limitation of virtual surround to wireless mode.
Everyday users highlight lag-free wireless audio, comfortable fit and strong bass, but complain about the average mic, ear-pad warmth, lack of USB-C and extra steps needed to activate virtual surround.