Introduction:
Final Audio are a prestigious Japanese audio company, and the makers of the flagship A8000 IEM, which I also reviewed a few months ago:
https://www.head-fi.org/showcase/final-a8000.24043/review/23707/
The official product page for this IEM (including extensive discussions about how their goals for the sound signature and how it was designed) may be found here:
https://snext-final.com/en/products/detail/B1
The website also has a handy bio of the company and its evolution, for those who would like to know more.
The B1 retails at USD $699; readers who wish to purchase this IEM in the UK may do so at:
https://www.hifiheadphones.co.uk/co...1-hybrid-dual-drivers-iem-earphones-rose-gold
My thanks to Final Audio and John at KS Distribution for authorising this sample to be provided to me in exchange for my honest review.
The B1 is a hybrid design, featuring 1 dynamic driver and 1 balanced armature (specially tuned with no crossovers), and coming with an OFC silver-plated cable with MMCX connectors, terminated in a 3.5mm plug.
This plodding litany of utilitarian facts fails utterly, however, to capture the true allure of the Final Audio B1. It is, for me, one of the most stunningly gorgeous IEMs I’ve ever seen.
And as my loyal readers (hello mother and father!) will surely already know, Layman1 is not a fellow given to reckless and irresponsible hyperbole
Still, surely only the finest written works of human romanticism can hope to convey the peerless beauty of this IEM;
“
Shall I compare thee to a summer’s day? Thou art more lovely and more temperate”
(William Shakespeare)
“
Twas so; but this, all pleasures fancies be
If ever any beauty I did see,
Which I desir’d, and got,
‘twas but a dream of thee”
(John Donne)
“
Ooh baby, ooh baby ooh,
Baby ooh,
Ooh baby baby, ooh,
Baby, ooh baby, ooh.
Baby, baby, baby.
Ooh.
Baby.”
(Justin Bieber)
With such eloquently evocative sentiments echoing in our minds, let us move swiftly to satisfy other senses, which of course means a seamless segue into the now-legendary/infamous photo section of the review
Photos:
(carry case photos courtesy of the Final Audio website, all others my own work; much like Lyra in 'His Dark Materials' I cry "Fie upon dust and all it corrupts!")
Build Quality and accessories:
Unlike the packaging of the Solaris 2020 which I reviewed earlier this week, the B1 features sleek and understatedly prestigious packaging. I had previously seen a pretty similar set of packaging and accessories when I reviewed the Final Audio A8000, and this was a similarly enjoyable unboxing experience.
The carrying case looks at first glance to be the same as the one packaged with the A8000; however closer examination reveals it to be made entirely of a rubbery material.
Now, I had mixed feelings about the A8000’s case; it had a metal upper shell, but a rubber lower half which I felt put the circa $2000 IEMs at risk of damage.
I proposed incorporating another disk of metal bonded onto the lower rubber half.
So with the B1 carry case being made entirely of this soft material, I do worry how much it will do to protect these rather expensive IEMs, especially given how delicate I imagine the beautiful rose gold coating will prove to be.
Now the B1 was already released at the time of that review, and Final Audio very graciously responded saying that they would take all of my feedback on board; a gratifying and humble bit of community engagement which I want to give credit for here!
In any case, since I don’t wish to test the structural integrity of the carrying case by dropping it onto a variety of hard surfaces, I must admit that my concerns at present are merely hypothetical.
What I can say however, is that – as with the A8000 carry case – I wish to salute Final Audio for coming up with such an elegant, sleek and unique design.
With the wise application of some cautious handling, this case has the big advantage of being effortlessly pocketable (or indeed bag-able; did I just invent a new word? Excellent!).
To once again shamelessly regurgitate excerpts from previous reviews, with the A8000 (and my recent Solaris 2020 review) I expressed the opinion that I personally feel a flagship IEM should be either offered with a choice of cable termination, or at least be offered in a 2.5mm variation, with 3.5mm and 4.4mm adaptors provided to cover the main use cases.
My contention was that I feel most people buying an IEM at that price point will be using a dedicated DAP/DAC/Amp to power it, and more than likely wish to employ the balanced output of said device to do so.
Now, such a contention is probably not quite so powerful in the case of a $699 IEM, but I still stand by it
Overall though, I’d still like to praise Final Audio for both the packaging and the product itself; I champion great design, and both of these things have it in spades
Finally, I'd add that despite what looks like a fairly angular metal shell (albeit with rounded edges), these IEMs were utterly comfortable to wear for extensive listening sessions, more so than the A8000 and more so than most IEMs I own.
Sound:
Now we move smoothly on to the section that could have been titled "Yeah, that's all very well and good Layman1, but please get to the point and tell us what they actually SOUND like!" but which - in consideration of my poor typing fingers and your already no doubt strained attention span - I have more briefly, and yet with considerable imagination, titled the "Sound" section
And in a shake-up to my usual format of almost heretical proportions, I’m going to try putting the summary first, and those that want to read a track-by-track breakdown of my findings can continue on (plus there’s the brief Conclusion at the end of the review). Feel free to let me know if you prefer it this way or sally forth with the torches and pitchforks if you wish things to go back to how they were.
Overall summary:
I’ve hugely enjoyed listening to the B1 and it has currently assumed the place of my daily driver, or what would be my on-the-go IEM, were it not for the lockdown enforced by the current pandemic. For me, it seems to bring some of the qualities I loved about the Final Audio flagship A8000; those fast and accurate transients are a tad more calm and sedate here to allow for a slightly more organic presentation; otherwise, commonalities include the distinctive presentation of detail and the beautiful musicality it brings, but with the warmth and richness that for my personal preferences was less than I would have liked in the A8000.
I find myself moved once again to comment on the rather unique tuning of an IEM I’m reviewing. Given that my recent reviews have included the UM MEST and the CA Solaris 2020, I think I can be forgiven for perhaps sounding like a broken record here
I think the B1 performs a kind of audio trick, where some of the sounds (especially low end) are quite concentrated into the centre of the soundstage. This gives the music a feeling of intimacy, immediacy and engagement. But then it saves those outer edges of the soundstage for when better separation is required, or where there’s instruments or backing vocals whose detail needs to be presented.
In doing so, it has a quite enchanting ability to present details (including micro-detail) in a way that surprises and delights, yet without any need for a strong-arm “hey look at this!” approach which you might find in a more analytical IEM. It’s quite an organic presentation of detail and really rather charming.
It’s a pretty balanced IEM overall, with a low end that brings more mid-bass warmth and rumble than sub-bass slam and impact (although it’s no weakling in that area either), wonderful rich, warm and engagingly musical mids and a satisfyingly clear and smooth treble. It mostly has a decent soundstage size and degree of separation (although see my comments above regarding its rather unique tuning). Also, its presentation of timbre is excellent and it excels with both male and female vocals.
If you’re into huge, complex orchestral music where a vast soundstage and great separation are a priority, then the B1 might not be to your taste; I think in pretty much all other cases, Final Audio have created an IEM that could surprise and delight you and I feel that I can thoroughly recommend you to give it a try.
Additional notes:
With regards to the review process, I have a few tracks which I’ve only found available on MP3; the rest are FLAC or WAV in 16/44 or 24 bit hi-res, with a few DSD56 tracks sneaking their way in too.
For the purposes of this review, I used the Sony WM1A DAP (with hardware modded by Head-Fi member
@Nayparm and MrWalkman’s DMP-WM1 custom FW) and a Sony WM1Z, (HW unmodded, but using MrWalkman’s DMP-WM1 custom FW).
I used New Bee wide-bore foam tips at first, however I found that the bore was too wide for the nozzles of the B1 and they were slipping off. I found another box of foam tips (Tenmak, bought from Amazon, to fit 4.6mm – 6.1mm nozzles), still wide-bore, but with a slightly narrower fit, and these were a bit better in terms of staying put, with a very similar sound signature as far as I can tell.
I ultimately settled on Sedna Xelastec ear tips though, since these provided a completely secure fit on the nozzles and also had excellent synergy with the sound signature of the B1, opening and lifting it up a little, without any compromise to the richness or low end power.
Track by track evaluation:
As ever, my preferred method of testing is to try out the product in question with a selection of songs from various genres and to let that process draw out the comparative strengths and weaknesses of each product, with a summary (now at the beginning of ‘The Sound’ section) for those who lack my infinite saintly patience

Of course, you may just want to flick through, pausing only when you see a song that you know well, or one that belongs in a genre you favour.
Queen – It’s Late (DSD 64)
With this track, what I’m primarily looking out for is how the IEM will handle the electric guitars and the vocals in the opening section; drum thump and bass in the latter sections is also of interest.
What struck me immediately was the timbre and clarity of the opening guitars.
Reminiscent of the A8000, the B1 surprises and delights with its presentation, that relies less on transient speed but instead brings wonderful decay, sustain and so forth.
The crunch, fuzz, attack and decay of the electric guitar is splendidly captured here.
Vocals are precisely centred with an attention-grabbing freshness and immediacy, along with a lovely black background and space around the vocal that really allows the timbre and performance to shine.
Alison Lau – Handel’s Lascia la spina (24-96 HDTracks FLAC)
There are three main details I look out for when critical listening with this track:
1) the very first part of the track, where you can make out a collective intake of breath and movement as the players of the stringed instruments prepare to start playing. On some IEMs this detail is not very prominent, but it’s presented with clarity and air with the B1.
2) The way the strings swoop down low from 14-15 seconds; I’m looking at how well the IEM presents the richness, depth and timbre. The performance of the B1 in this regard is fairly good; I’d give it 7 out of 10. It doesn’t swoop quite so low and with such depth and richness as it does with the Stealth Sonics U4, Solaris 2020 and other IEMs with a more substantial low end and mid-bass; but still, I’d give it around 7 out of 10. It’s still got a satisfying amount of richness and body.
Overall with the stringed instruments and the harpsichord, I have to say the presentation is hugely enjoyable; the harpsichord benefits from a soft, but bright sparkle in the treble and upper mids, the soundstage and separation and air in the treble help with the spatial imaging. Beyond that, the rather unique tuning of the B1 just imbues the stringed instruments with a beautiful richness and sweetness, lifted with a delicate sparkle.
3) the vocals of talented Hong Kong soprano Alison Lau are able to soar higher than the cost of an Apple account bill for a child’s iPad, whose parents forgot to switch off in-app purchases. As such, with some IEMs the vocals can become uncomfortably piercing for people (such as myself) with sensitivities in this area.
The B1 does perfectly in this regard, perhaps little surprise given that it’s a Japanese-made IEM which doubtless will have been designed with the Asian pop market as a consideration.
The vocals again benefit from that rich and gently sparkling tonality, the timbre here is excellent, faithful and vivid.
Club 8 – Love Dies (16-44 FLAC)
This is a song I use for testing soundstage. From around 40 seconds to 1m06s, the song adds more sounds and you can hear the soundstage unfolding out like a blossoming flower in the latter stages of this section, as more sounds come in outside the pre-existing perceived outer edge of the soundstage.
The song starts with a synthetic, slightly rumbly texture bass tone, that continues throughout. This serves as a good medium to give us a better understanding of the tuning of the B1. I feel like the bass is concentrated into the centre of the soundstage; not muddy, but dense. The piano that plays over the top is different; it seems to extend quite widely, and the vocals that come in shortly after do this even more.
The soundstage here is good; not vast, but not lacking or congested by any means.
It took me a while to figure out what was going on with the B1’s sound signature.
At times, it felt very intimate, and I’d think “oh, so these are an intimately-tuned IEM”, but then in the next song, they’d surprise me with the sounds that I was hearing, much further out than I thought the B1 would have been capable of.
A special note (again) to the presentation of female vocals here. It imbues them with just the right amount of richness and body, and never lets them become piercing or sharp, which is always something that can happen on IEMs with this song, as the vocals are right at that limit in terms of the crystalline mastering and their natural sound.
Park Ji Yoon – 성인식 Sunginshik (Coming-of-age ceremony) (320k mp3 – only because I can’t find it in FLAC or on CD anywhere! Help!)
This is a sultry, driving, grown-up piece of K-pop.
On this song, I’m listening out for the bassline, which on some IEMs (for example the UM MEST, EE Nemesis) has subterranean levels of sub-bass depth, extension and power.
That’s not so much the case here with the B1; it’s fairly powerful and engaging, but it’s not going to result in any soiled underwear either
Overally, it sounds balanced, musical and handles the song well.
Buena Vista Social Club - Chan Chan (24-96 HDTracks FLAC)
Here’s a song which again draws some attention to the interesting tuning of the B1.
This song has a live feel, and on high-end IEMs you can get a real feeling for the spatial location of each player. Here though I feel the presentation to be more intimate, as it seems more of the instruments (and vocals) are concentrated into the centre of the soundstage.
This is exacerbated by the B1’s presentation of the plucked double bass, which is strongly presented in the mid-bass.
This overall effect is reduced significantly, and the perception of the soundstage and separation opens up more, as the acoustic guitar starts to get into its stride from about 24 seconds in and the slide guitar comes in from 48 seconds and backing vocals thereafter.
Now it’s sounding much more like I’m used to, with good separation and distinction between the different components of the song.
Passes the trumpet test (potentially wince-inducing trumpet solo from 2mins 38s in). Not even slightly peaky or sharp. Oh, it just sounds beautiful, really wrenching emotionally.
The B1 does that part
exceptionallywell! Such sweetness to the timbre, such musicality!
Counting Crows - Angels of the Silences (16-44 FLAC)
This track is mastered fairly bass-light and quite expansive. However, it’s heavy on ‘wall of noise’ electric guitars which on certain IEMs can come across as being a bit sharp and fatiguing, especially without much mid-bass to ground it all.
The B1 does well here. It
justmanages to keep the sharpness and overwhelm under control and imbue the sound with enough body to make it satisfying and engaging.
Guitar crunch is presented well, but I feel the vocals are a bit recessed in the mix.
Splashy cymbals are not too sharp, but perhaps lack a bit of accuracy.
Counting Crows - Good Time (16-44 FLAC)
The high hat sounds very clear and detailed, but without any sharpness. The bass is good; perhaps it could use just a little bit more depth, impact and rumble (but then I am an unapologetic basshead, haha). Vocals are back again, slightly forward and right of centre.
Good vocal timbre
From 17 seconds to 45 seconds into the track, there’s just percussion, vocals, piano and bass. And it all sounds pinpoint precise, separated and the timbre of the vocals and indeed everything else is very realistic and engaging.
Counting Crows - Omaha (24-192 WAV)
The drum in the opening bars is presented with a powerful thump, and the B1 does it well. Again, the B1 is doing its ‘organic presentation of detail’ thing very well. I’m just enjoying the music, but constantly getting delightful little surprises as I notice instruments, backing vocals and so on, without it taking me out of the enjoyment of the music.
Madeleine Peyroux – Ophelia (24-96 HDTracks FLAC)
Again, here on a song with an acoustic double bass, I’m feeling that bassline being concentrated into the centre of the presentation, giving everything a dark, very dense centre, which gradually recedes as other instruments come in.
Still, it’s another track on which the B1 brings out all the details and impresses with its timbre and musicality.
Aurora (German soprano-metal group, 24-44 HD FLAC)
The B1 really presents this song extremely well.
Given the cinematic, operatic nature of the song, I’m suddenly struck by the realisation that this IEM would be potentially outstanding to use whilst watching films or playing computer games. The ‘metal’ part comes in from 29 seconds, where the guitars have really good timbre, full bodied with the timbre of the fuzz and crunch so full of texture.
The soft, booming drum sound that comes in the breakdown from 45 seconds onwards is emotionally moving and powerful, and is one of the things that gives me the feeling this IEM could excel for gaming and media too.
Farhan Saeed & Shreya Ghoshal – Thodi Der (16-44 FLAC)
This Bollywood stunner is a good track for seeing how an IEM presents male and female vocals, since it contains testing examples of both.
The female vocal is very light and high pitched, whilst the male vocal is relatively high pitched, but both (on the right IEM) demonstrate a lovely timbre and emotiveness.
I have to say, the B1 does superbly here. It imbues the female vocal with a body and richness that hugely complements it and stops it from ever becoming shrill (it’s a very high-pitched vocal at times). It just sounds superb here, one of the best presentations I’ve heard, and I’ve listened to this song with most of the high-end IEMs I’ve reviewed.
On top of that, the music itself has a similar treatment, every instrument standing out with captivating timbre and musicality. The B1 just does this SO well.
I notice how well it presents harmonised vocals, separated to let each element display its character, but synergistically entwining them into a musical whole.
Right, I’m off to listen to this whole song again from the start. See you in a bit
Anberlin - The Art of War (16-44 FLAC)
I’d say the B1 does pretty well overall with this song; there’s a decent level of clarity to the sound of the bass channel opening up.
Again, separation and imaging are excellent. Soundstage not huge but large, and the strong separation and imaging help to give a clear delineation between instruments and effects, allowing each space to captivate and shine.
The bassline that comes in from 11 seconds onwards is presented fairly well; the B1 is shows a nice level of texture and good, satisfying, but not outstanding levels of power and rumble.
Again, male vocals impress with their timbre and presentation; very realistic and engaging.
The separation of lead vocals from backing vocals, is subtle and well-done, separating enough to allow one to distinguish them from each other and appreciate what each vocal is bringing, but still allowing them to combine and become greater than the sum of their parts in the process.
Comparisons:
I may revisit this later, or comment on the Head-Fi thread directly; I will be reviewing a couple of similarly-priced IEMs over the coming weeks; UM mini-MEST and the DUNU SA6, so watch out for those
Cable swap:
Eletech Prudence:
This is a fine cable that I reviewed previously; not only does it sound great, but equally importantly, it looks great too! The angular gold triangle design on the plug and Y-split are an excellent aesthetic complement to the similar rose gold elements on the shell of the B1.
With the Prudence, I immediately noticed more sub-bass impact and rumble and a tighter and more pinpoint low end. Also, an increase in soundstage and separation, more accuracy in decay and transients and a slight increase in shimmer.
Skedra demo cable (which I have decided to call ‘Hammer Of The Gods’)
Illustrious Head-Fi member
@skedra has very kindly loaned me a demo cable that he created; it’s a 4-wire cable crafted from an intriguing mix of gold-plated copper wire and palladium-plated silver wire.
It was supple and comfortable (and rather beautiful too!) and made a noticeable change to the sound signature of the B1.
I immediately noticed the wider soundstage and separation and increased clarity.
Which by itself would be enough to make a person want to dance with joy and gratitude for all things Viking-related, but on top of that the real and unexpected delight was how it made the B1 sound more musical, organic, rich and resonant, and enhanced the ability of the B1 to draw attention to small details in the music. It's a truly stunning combination that displays terrific synergy and was simply a joy to listen with.
Conclusion:
I feel Final Audio have produced a terrific and highly competitive IEM at this price point, that’s also capable of scaling up with a variety of sources/cables/tips; with Skedra’s demo cable and my customised Sony WM1A DAP, the B1 was sounding like a $1000+ IEM.
Even before I mention the sound, I have to say that the B1, for my tastes, are one of the most gorgeous IEMs (if not THE most) to ever have graced Layman1’s golden ears
Humour aside, they’re a mid-level priced IEM that puts many TOTL flagships to shame. Not to mention the remarkably comfortable and secure fit (which I just mentioned), that - combined with the fatigue-free smoothness of the sound, made it perfect for all day listening and on-the-go journey enhancement duties.
Sound wise, it has lows that are rich, fast and powerful enough to leave bassheads no room for complaint, whilst not being so overbearing as to alienate those who prefer things somewhat less subterranean.
It has gorgeous and enchanting mids, a rich and satisfying timbre, a unique way of organically presenting micro details and clear and smooth highs with a gentle sparkle that I never found peaky or fatiguing, no matter how testing the source material.
If you are looking for something neutral-reference or something with a huge holographic soundstage and wide separation for grand, complex orchestral pieces, then this might not be the IEM for you, but in pretty much all other use cases, I’d have no hesitation in recommending you give the Final Audio B1 a try.
The B-Series uses the DD from the E-Sieres (not A-Series). So they look like A-Series, but are actually not related.
The MAKE Series uses the same DD and BA ans in the B-Series (so also the E-Series DDs)
Make 1 and B3 use the same drivers
Make 2 and B1 use the same drivers
Make 3 uses an single DD (but, even though those are also single DD, is not related to the A-Series due to the use of the E-Seires driver.)
There is also a new MAKE-Series Earphone with an E-Series housing.