Brainwavz B400 In-Ear Earphone review


In their words:-

 “The Brainwavz B400 uses a 4 Driver system, with each driver focused on its’s own specific range of the sound spectrum, resulting in a true audiophile grade sound”

 Compared to the B200 the B400 brings more bass into the equation. It still is one of the flatter sounding earphones in the market with a well balanced mid range and treble region but the bass has good amount of thump and rumble to it.

 The sound signature is fairly neutral with a bit of warmth to the bass and slight gloominess to the treble region. Tonality is where the B400 is fairly better than the B200.

 Burned for more than 80hrs, I am using the Plenue R for this review, the B400 doesn’t need much power and can be driven out of mobile devices but some devices like my Galaxy A7 2016 exhibits huge amount of background noise. I advice to use it with an aptly powerful DAP or latest generation of mobile devices.


 The Brainwavz B400 has a nominal impedance of 30ohm but it is not very demanding and doesn’t have a problem adapting to the sources sound signature. Driving out of mobile phones the B400 doesn’t deliver very good amount of details. Most of the instruments sound a bit veiled and some of the micro details are lost.

 The 115db sensitivity helps the B400 to get very loud. So the thing is, match ability of the B400 depends on your device, it does perfectly fine with the Galaxy Note 9 but not with the low ringers.


 Even when they have not specified the driver configuration I would like to believe that the lower end has two drivers for itself. The meatiness and fuller notes delivery is the reason behind my theory.

 It is the biggest difference from the B200 which was considerably flat. The B400 delivers a very good lower end with a wholesome punch to it, more punchier than any other BA based earphone in this price range. Even the InEar SD5 can take a leaf out of the B400’s bass. The sub-bass have very good extension to it and have a beautiful punch and slam to it. It moves good amount of air. The mid bass is in line with the sub-bass without any type of humps to it. It is nicely rounded and gives very good body to the lower end. The upper bass is not much forward but has very good amount of details to it.

 The decay speed is not very fast for a BA based earphone giving the lower end good amount of precipitation and grunt. It really feels like a well tuned dynamic driver, which it is not.

 The B400 delivers very good amount of details with plenty of texture to it. If you like good amount of bass, you will not find you are missing out on a lot but it will not be able to please bass heads. It manages to place it nicely between being lean and being boomy. A job well done by Brainwavz.


 The mid range is nicely balanced with the lower end. It is not in the valley but is a hair less forward than the bass region. Possibly driven out of one driver the mid range has very good amount of details to it. It delivers very accurate notes with very good amount of transparency. The tonality is very neutral. There is hair is gloominess to it but cannot be categorized as unnatural.

 The transition from upper bass to lower mid range is not bad. It maintains good amount details but is not very forward, the level of energy is slightly lacking.

 The B400 has very accurate vocals. Both male and female vocals sound natural without any anomaly in them. Notes have very good amount of energy and good amount of body to the. Male vocals do sound slightly lean but that is expected for a nearly two year old earphone and is can be seen with most of the BA based earphones in this price range. There still is good amount of texture to it. Female vocals sound very accurate and have nice sharpness to them.

 Instruments are equally good with notes accuracy but are slightly lacking with transparency. The TSMR 2 delivers better transparency and energy with notes and has better micro details too.

 Stage size of the B400 is not exactly big. It is deeper than it is wide or tall. The size is average and others are doing better in this price range. Even when the stage size is not huge the B400 has very good amount of air between instruments and layering and separation is very good.


 The B400 has a very balanced treble region. It is fantastically balanced with the mid range. Notes have maintained even sharpness and depth compared to the mid range. There is very good amount energy and it has very good notes accuracy. Decay speed of the notes is on point. They have nice bite to them. Notes don’t sound very thick or thin while maintaining nice depth to them.

 The transition from upper mid to lower treble region is nicely maintained with very good amount of energy transparency.

 The B400 delivers very good amount of details here, but earphones like TSMR 2 are doing better. The extension when compared to earphones like TSMR 2 and BGVP VG4 feels a bit lacking. Layering and separation is up to the class with very good instrumental placement.

 The B400 has a nice balance of everything, it is not aggressive or dull, it delivers a satisfying treble region with nice details and bite to it.



Suman Sourav Meher

Suman Sourav Meher

My humble audiophile journey started in 2010, when I was in college, where I fell in love with the elements, nuances, and variations of this mesmerizing world. The ability of tiny earphones to recreate amazing sounds made my bad days tolerable and good days better! Now I am a full-time audiophile with a preference for musical tracks, especially vocals and engaging ones. I must admit I am addicted, but not to drugs or alcohol, but to earphones. Come join me as I share my experiences, bad or good, and let’s have some fun!


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