Disclaimer: Brainwavz sent me this pair for my review and honest feedback.
Caveat: I am a big fan of the Brainwavz house sound so bear that in mind when reading my review.
Starting my HeadFi journey a little late I wasn't privy to the Brainwavz B2 years and thus was extremely interested (based on everything I'd read about the B2) in hearing that Brainwavz was again venturing into new balanced armature waters. I've owned more than a couple of BA IEM's over the years but when dynamic drivers really started to come into their own I dumped most of them and didn't look back. So I was a little bit skeptical about how I would find the sound of a single BA driver earphone.
While I don't necessarily consider myself a basshead I DO like a full and robust lower end. My passion is live music and my continuing search in the headphone world is for the sound that gets me ever closer to the stage and to the musicians on the stage. Live music has plenty of bass and headphones that don't include that spectrum of music sound flat and lifeless to my ears.
Upon opening the box I found the usual Brainwavz case and accessories and was pleasantly surprised to find the B150 does not have a mic/control. I know I'm in the minority, but I use my earphones to listen to music exclusively and dislike anything that could potentially get in the way of that. Additionally. I find them hard to work around with cord sliders and shirt clips which I use often. I was a tiny bit disappointed that for the asking price the B150 seemed to be made of the usual (though apparently good quality) Brainwavz plastic and the cord wasn't really anything special in terms of design or materials.
I quickly tried them in my ears (they are over-ear only) and plugged them into my Chromebook. A quick stroll through several tracks of familiar tunes sounded pretty darn good. Then I switched to a file with a considerable amount of bass and my eyes widened with surprise. I was half tempted to take them out of my ears and attempt to crack the cases and see if there weren't dynamic drivers instead of BA's inside. I'd never heard a BA with this much bass. I quickly switched to my laptop with DAC and amp and cracked open some hi-res files from HD Tracks. Nirvana! I was amazed at the broad, full sound emanating from these little single driver 'phones. Definitely not the thin (if "accurate" sound I was used to with previous BA's. Vocals were surprisingly lush and intimate.
At this point, I should mention that, as usual, I base my impressions of any given headphone or speaker on how closely it resembles real world sound. I've been around live music my whole life and am proficient on the piano, guitar, and trumpet and have sung semi-professionally in college. I've played in bands and orchestras since grade school and know what the timbre of almost all instruments sound like and for that reason most of the music I use to review headphones is acoustic and orchestral. I do love rock as well but other than speaker dynamics don't find it all that useful in reviewing equipment since much of it is electronic. So I won't be throwing around poorly understood esoteric words meant to convey the nuances of musical sound but, instead, I'll be focusing, as much as possible, on how real or better yet "live" the music sounds through these IEM's.
So let's get to it. For the patience-impaired, I'll just say. These IEM's sound really really good. I've always been amazed by how much sound Brainwavz seems to be able to extract from a single driver. And I've never heard a BA with this much low end. Add the speed and dynamics inherent to BA's and this little 'phone checks most of the boxes I look for in an IEM. Additionally, many of the BA's I've owned or heard in the past at times seemed a little more congested than comparable dynamic drivers. These are NOT congested. In fact, compared to one of my current favorite Brainwavz offerings, the S5, they exceed it in width and depth of soundstage as well as instrument separation. They make orchestra music a joy compared to my dynamic driver headphones. At first, I thought I was just noticing the instrument separation and interpreting it as broader soundstage but the more I listened to more tracks, especially older recordings that I know extremely well, it quickly became apparent that they exceed the S5 in both aspects.
It's rare for me, these days, to hear a headphone and immediately want to go through as much of my music collection as possible to see what differences I can hear. Most IEM's are so competent that sonic differences are fairly small but with the BA150's I definitely wanted to listen to more and more of my files. Also, one of the big things I look for in a new 'phone is if it seems to remove any additional "layers" (for lack of a better term) between me and the artist. On many recordings, these do that as well. If I have any criticism of the general sound signature at all it might be that on some recordings the instrument separation and soundstage width almost sound a little artificial, especially some of my older stuff from the 60's and 70's. Kind of like hearing stereo for the first time with a heightened sense of the separation of left and right channels.
As I mentioned earlier, I'm a tad concerned about build quality since they're plastic but they seem fairly sturdy though they don't "feel" as substantial as the metal S5. I should mention at this juncture that they are pretty much the most comfortable IEM's I've had in my ears. They are massively more comfortable (I suspect the somewhat more rounded housings) that the similarly shaped XF200. Maybe it's just my ears, but I can wear these, literally, for hours with little fatigue or discomfort. Microphonics were non-existent when worn my preferred way with the cord behind my neck, cable cinched and the nice shirt clip attached to my collar.



After spending several hours a day for over a week with these earphones I can honestly say that they've easily bumped the S5 and my trusty twin driver TDK IE800 from the top of my listening tier. If this is what Brainwavz has in store for us the future is indeed bright. I can't WAIT to see if they come out with a new dual driver BA earphone and see how it compares to this little beauty.
So, the bottom line, this is a great little earphone. The sound is very impressive. Instrument separation is excellent as well as placement of each instrument on the soundstage. It definitely had me rolling through most of my music to hear things I hadn't really heard, or if I had it was mashed together with other sounds and instruments. The only real question in my mind is HOW impressive this is compared to many of the new multi-driver options in the same price range that are coming out these days. Personally, I'm glad I didn't discount these 'phones solely based on price, build or features because they certainly sound great to my ears and I heartily recommend you audition them if you get the chance.
I rate headphones almost entirely based on relative sound quality for the price range and these are very impressive for a solatary driver. So 4 and 1/2 stars. Also, I always edit my reviews if things such as durability issues pop up.
* I'll also be editing this review after I have a chance to seen how well they isolate (I use my rather noisy gym as my real world reference) and how well they stay in place doing things like running or other activities.
Caveat: I am a big fan of the Brainwavz house sound so bear that in mind when reading my review.
Starting my HeadFi journey a little late I wasn't privy to the Brainwavz B2 years and thus was extremely interested (based on everything I'd read about the B2) in hearing that Brainwavz was again venturing into new balanced armature waters. I've owned more than a couple of BA IEM's over the years but when dynamic drivers really started to come into their own I dumped most of them and didn't look back. So I was a little bit skeptical about how I would find the sound of a single BA driver earphone.
While I don't necessarily consider myself a basshead I DO like a full and robust lower end. My passion is live music and my continuing search in the headphone world is for the sound that gets me ever closer to the stage and to the musicians on the stage. Live music has plenty of bass and headphones that don't include that spectrum of music sound flat and lifeless to my ears.
Upon opening the box I found the usual Brainwavz case and accessories and was pleasantly surprised to find the B150 does not have a mic/control. I know I'm in the minority, but I use my earphones to listen to music exclusively and dislike anything that could potentially get in the way of that. Additionally. I find them hard to work around with cord sliders and shirt clips which I use often. I was a tiny bit disappointed that for the asking price the B150 seemed to be made of the usual (though apparently good quality) Brainwavz plastic and the cord wasn't really anything special in terms of design or materials.
I quickly tried them in my ears (they are over-ear only) and plugged them into my Chromebook. A quick stroll through several tracks of familiar tunes sounded pretty darn good. Then I switched to a file with a considerable amount of bass and my eyes widened with surprise. I was half tempted to take them out of my ears and attempt to crack the cases and see if there weren't dynamic drivers instead of BA's inside. I'd never heard a BA with this much bass. I quickly switched to my laptop with DAC and amp and cracked open some hi-res files from HD Tracks. Nirvana! I was amazed at the broad, full sound emanating from these little single driver 'phones. Definitely not the thin (if "accurate" sound I was used to with previous BA's. Vocals were surprisingly lush and intimate.
At this point, I should mention that, as usual, I base my impressions of any given headphone or speaker on how closely it resembles real world sound. I've been around live music my whole life and am proficient on the piano, guitar, and trumpet and have sung semi-professionally in college. I've played in bands and orchestras since grade school and know what the timbre of almost all instruments sound like and for that reason most of the music I use to review headphones is acoustic and orchestral. I do love rock as well but other than speaker dynamics don't find it all that useful in reviewing equipment since much of it is electronic. So I won't be throwing around poorly understood esoteric words meant to convey the nuances of musical sound but, instead, I'll be focusing, as much as possible, on how real or better yet "live" the music sounds through these IEM's.
So let's get to it. For the patience-impaired, I'll just say. These IEM's sound really really good. I've always been amazed by how much sound Brainwavz seems to be able to extract from a single driver. And I've never heard a BA with this much low end. Add the speed and dynamics inherent to BA's and this little 'phone checks most of the boxes I look for in an IEM. Additionally, many of the BA's I've owned or heard in the past at times seemed a little more congested than comparable dynamic drivers. These are NOT congested. In fact, compared to one of my current favorite Brainwavz offerings, the S5, they exceed it in width and depth of soundstage as well as instrument separation. They make orchestra music a joy compared to my dynamic driver headphones. At first, I thought I was just noticing the instrument separation and interpreting it as broader soundstage but the more I listened to more tracks, especially older recordings that I know extremely well, it quickly became apparent that they exceed the S5 in both aspects.
It's rare for me, these days, to hear a headphone and immediately want to go through as much of my music collection as possible to see what differences I can hear. Most IEM's are so competent that sonic differences are fairly small but with the BA150's I definitely wanted to listen to more and more of my files. Also, one of the big things I look for in a new 'phone is if it seems to remove any additional "layers" (for lack of a better term) between me and the artist. On many recordings, these do that as well. If I have any criticism of the general sound signature at all it might be that on some recordings the instrument separation and soundstage width almost sound a little artificial, especially some of my older stuff from the 60's and 70's. Kind of like hearing stereo for the first time with a heightened sense of the separation of left and right channels.
As I mentioned earlier, I'm a tad concerned about build quality since they're plastic but they seem fairly sturdy though they don't "feel" as substantial as the metal S5. I should mention at this juncture that they are pretty much the most comfortable IEM's I've had in my ears. They are massively more comfortable (I suspect the somewhat more rounded housings) that the similarly shaped XF200. Maybe it's just my ears, but I can wear these, literally, for hours with little fatigue or discomfort. Microphonics were non-existent when worn my preferred way with the cord behind my neck, cable cinched and the nice shirt clip attached to my collar.



After spending several hours a day for over a week with these earphones I can honestly say that they've easily bumped the S5 and my trusty twin driver TDK IE800 from the top of my listening tier. If this is what Brainwavz has in store for us the future is indeed bright. I can't WAIT to see if they come out with a new dual driver BA earphone and see how it compares to this little beauty.
So, the bottom line, this is a great little earphone. The sound is very impressive. Instrument separation is excellent as well as placement of each instrument on the soundstage. It definitely had me rolling through most of my music to hear things I hadn't really heard, or if I had it was mashed together with other sounds and instruments. The only real question in my mind is HOW impressive this is compared to many of the new multi-driver options in the same price range that are coming out these days. Personally, I'm glad I didn't discount these 'phones solely based on price, build or features because they certainly sound great to my ears and I heartily recommend you audition them if you get the chance.
I rate headphones almost entirely based on relative sound quality for the price range and these are very impressive for a solatary driver. So 4 and 1/2 stars. Also, I always edit my reviews if things such as durability issues pop up.
* I'll also be editing this review after I have a chance to seen how well they isolate (I use my rather noisy gym as my real world reference) and how well they stay in place doing things like running or other activities.