Brainwavz M2 IEM Review

About the Brainwavz M2 IEM…

Brainwavz is a Hong Kong-based audio company that manufactures portable audio devices including IEMs, DAPs, Headphones and even DACs since 2008. We have already reviewed a few of their earphones on this site a while ago. Since I loved them so much I am more than happy to check out Brainwavz other earphone models due to a rather large portfolio.

The earphone here is the Brainwavz M2 which is one of their oldest IEMs. I faintly recalled reading a review of these a good six years ago. And behold! A quick google search revealed that these are one of the first few earphones Brainwavz ever made. If you are wondering what is so great about six years then you should know that Brainwavz have a lot of new IEMs available and if these are still being sold today then maybe there is something special about them. We’ll know in a bit once I put them through their paces!

The following specs are from its website


  • Intense, Detailed Bass
  • Comfortable Fit
  • Silver, Oxygen Free Cable


  • Drivers: Dynamic, 10.7 mm
  • Rated Impedance: 20 Ω
  • Frequency Range: 20 Hz ~ 20 kHz
  • Sensitivity: 115 dB at 1 mW
  • Rated Input Power: 10 mW
  • Cable: 1.3 m Y-Cord, Silver Plated
  • Plug: 3.5 mm, Gold Plated


  • Earphone Hardcase
  • 6 sets of Silicone Ear Tips (S M L)
  • 1 set of Comply™ Foam Tips S-400
  • 1 set of Silicone Bi-Flange Tips
  • 1 Shirt Clip
  • Velcro Cable Tie
  • Instruction Manual
  • Warranty Card (24-month warranty)

From its specifications, you’ll notice the lack of a microphone and volume controls. As said earlier, it was launched in 2009 when there were not many smartphones and so most earphones from that era were all without any microphones or volume controls. Of course, times have changed where in-line volume controls and microphone are in almost every new earphone today.

The driver housings are made of metal and the cable seems reasonably sturdy if a little bit stiff. While the earphone itself is very much an old model the accessories bundle has certainly been buffed from when it was first launched. I ALWAYS point out in almost every Brainwavz review and I WILL point out again- the earphone is bundled with a beautiful and sturdy case. Its the best darn case I have ever used and so far nothing and no other IEM that I have seen has dethroned it at this price range.

Sound Quality

The Brainwavz M2 has a rather warm sound & the overall tonality is pretty smooth and largely neutral. The M2 can portray a very decent amount of bass. The midbass is slightly boosted but not intrusive. Quality wise the bass is pretty good. The bass response is very quick and if you listen to a lot of fast-paced music you will find the Brainwavz M2 can keep up pretty easily.

The mid-range of the Brainwavz M2 is, however, the main highlight. It is very smooth, rich and detailed for its price segment. Vocals sound lovely on the M2. The soundstage is pretty average in both width and depth. The instrument separation and imaging where you can try and pinpoint individual instruments playing a song is very good!

Which brings us to the treble. The Treble is good with plenty of detail on offer without any glaring peaks or spikes to cause issues. It is not very extended or crisp and if I had to really describe it I would say its very slightly recessed. Which would make the M2 on the darker side of neutral (as opposed to the brighter or treble focused side of neutral).

So with a very slightly dark sound. I found the M2 to be a very comfortable earphone to use for extended listening sessions as a lot of times heavy midbass and boosted treble cause listening fatigue which the M2 doesn’t have.

At the end of the day…

So while Brainwavz has positioned the M2 as a bass heads earphone it actually is a pretty good all-rounder which pairs well with almost all genres of music.

Bass wise there is a decent extension and very little boomy midbass. The midrange is excellent with smooth warm vocals and very good detailing. Soundstage width is not large but its imaging and instrument separation is very good.

And lastly, it has a very decent treble with no harshness and good detailing.

There is nothing sonically that I would call a weakness or flaw that detracts from the listening experience. And while the earphone is not strictly neutral as its very slightly on the darker side of neutral it is still very close to a perfectly neutral earphone and so works great with almost anything you would listen to. With great build quality and great sound, I have no hesitation in recommending the Brainwavz M2. The only one ‘flaw’ if you can call it that is the lack of a microphone as almost every earphone these days have one.


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