AFUL POLAR NIGHT

General Information

The Aful Polar Night earbuds immediately caught my attention—not just for their stunning design, but for their exceptional Hi-Fi sound. Having tested countless earbuds across all price ranges, from entry-level to TOTL, including hybrids and some of the best single DD models, I can confidently say that Polar Night stands out as one of my favorites. Its timbre is incredibly realistic and natural, capturing every nuance with breathtaking accuracy.

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What makes Polar Night unique is its Hi-Fi approach. Unlike other TOTL earbuds that go for an organic, analog-like sound, this one leans more towards precision and technical refinement—almost like listening to high-end bookshelf speakers. The vocals are vivid and engaging, pulling you into the music with stunning clarity. The bass has weight and warmth but stays tight and controlled, never bleeding into the mids. The treble is smooth and effortless, avoiding any harshness while keeping the details intact. The result is a natural, immersive sound with excellent layering and separation.

The Polar Night incorporates AFUL's Dual Resonance and Dual Damping Amplitude Control Technology, ensuring a well-balanced and accurate sound:

Advanced Acoustic Design

  • Channel A enhances the midrange resonance, making vocals and instruments sound more open and natural.
  • Channel B controls the low-frequency airflow, giving the bass depth and definition without overpowering the mix.
This smart tuning results in a balanced and highly accurate sound that feels lifelike and engaging.

I know this might sound like high praise, but as an earbud reviewer, I just call it as I hear it. I don’t hype products—I describe them based on my experience. Of course, YMMV (Your Mileage May Vary), since we all have different tastes and levels of experience in audio. But for those who have been in this hobby as long as I have, I think they’ll get where I’m coming from.

This is just my first impression—I’ll add comparisons and more details soon!

Latest reviews

JQuB3

New Head-Fier
Aful Polar Night Earbuds
Pros: Excellent bass response for a pair of earbuds.
Well controlled treble with good amount of sparkle and air.
Wide Soundstage with good amount of depth and height.
Cons: Not the most resolving of sets.
Larger earpieces may make the fit uncomfortable for some.
AFUL Polar Night Earbuds

Disclaimer:

I’d like to thank Hifigo for including me on the tour of the Aful Polar Night earbuds. I was given an opportunity to audition these buds and share my honest feedback regarding the Aful Polar Night. There has been no influence (monetary or otherwise) on me to write anything positive or negative about these earbuds. Everything shared in this article is my personal opinion based on my usage of the earbuds.

One can purchase the Aful Polar Night earbuds from the following link (non-affiliated, only for reference):

https://hifigo.com/products/aful-polarnight


Introduction:

I have mostly stayed away from earbuds as an audiophile since I prefer IEMs mainly due to their passive isolation and the overall immersive listening experience. In fact, IIRC, the Polar Nights are the 3rd set of earbuds I’m trying since I began my audiophile journey. Hence, I’m pretty much a noob when it comes to earbuds. That being said, let’s get into the Aful Polar Night earbuds.

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The Polar Night consists of a large 15.4mm Dynamic driver and employs a dual-channel resonance airflow control with dual-damping technology. This as per Aful, helps overcome the traditional low-bass issue of earbuds and treats the users with a solid, punchy bass response and true-to-life natural vocals. The earpieces are made up of a metallic front cavity with a resin material 3D printed rear cavity. The earpieces have a sleek matte finish and the shells are lightweight.

The “faceplate” rather the stem of the earbuds have patterns of blue / purple and red / purple on the left and right earpiece respectively. These patterns as per Aful, are inspired from aurora lights that fill the sky with energy and life in the form of their cool blue-violet patterns, during the long Polar nights. Hence, the name Polar Night I suppose. As per Aful, the left earpiece depicts the “Silent Polar Night” with Blue-purple geometrical patterns on the face covers. On the right side, it shows “Dawn’s Fiery Blaze” with eye-catching purple-red fragments on the face covers. Honestly speaking, the earpieces do look good and help the earbuds stand out due to their unique design.

The earbuds are detachable thanks to the MMCX port on each earpiece. The stock cable is a high-purity 5N single-crystal copper cable with 4-core 112-wire design. It is available in both 3.5mm and 4.4mm termination options. The unit I received came with a 4.4mm termination. The stock cable is excellent in terms of build quality and is free of micro phonics.

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Apart from the cable, the box included a storage case and a few foam ear tips (both full tips and donut shaped). There were also some small foam pieces, which are supposed to be dampeners / Tuning foam.

As such, the earbuds are easy to drive and sounded great off the BTR17. For the purpose of this review however, I used the Aful Polar Night earbuds with the FiiO DM13 CD player (just to get that retro feel). I also hooked up the DM13 to Xduoo XD05-Pro via Coax, essentially using it as a Cd transport with the AKM DAC card on the XD05-PRO along with a pair of Sparkos SS3602 opamps in the amp section.

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Sound Quality:

The Polar Night has an expansive sound stage with a mostly balanced sound signature.

For a pair of earbuds, the Polar Night has surprisingly good bass response. Whatever Aful has done in terms of acoustic engineering and driver tuning, is obviously delivering good results. The Polar Night delivers bass that is textured, clean, and articulate. The bass feels organically tied to the music. Kick drums have definition, not just thump, and bass guitars groove with clarity instead of mud.

The midrange of the Polar Night is breathtakingly open and lifelike. Vocals sound in the room rather than in your head. There’s a natural warmth without coloration, along with good note weight and details. This makes instruments like acoustic guitars, violins, and pianos breathe in a way that sound natural and life-like. Both male and female vocals sound great. There is a slight warmth in the midrange that gives the male vocals a distinct timbre. There are no sharp peaks / sibilance or shoutiness in the female vocals. Making the vocals sound smooth and natural. While it may not be the best in picking up nuances, it still manages to convey emotion beautifully. Soulful tracks like Ishq Bina (Taal) sound phenomenal on the Polar Night.

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The treble of the Polar Night is smooth, airy, and extended, but never fatiguing. The treble is naturally resolving without any hiss or shoutiness. Cymbals shimmer, not hiss. You get the full texture of brushes on snare heads, the sparkle of wind chimes, and even the decays of reverbs in studio recordings—all delivered with grace and control.

The soundstage is huge, almost like full-sized headphones. There’s a good amount of width, depth, and reasonable height. Imaging and separation are excellent. While not the most resolving, the resolution is pretty good, I never felt like there was a lack of details per se. While it may sound strange, the Polar Night has a holographic presentation. The spatial cues of instruments playing all around you are very well presented by these earbuds.

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Conclusion:

With a simple dynamic driver and some interesting acoustic engineering, the Polar Night gets the fundamentals right. Natural tonality, sublime mids, expansive staging and an effortless listening experience. The sound is non-fatiguing and the earbuds form factor are ideal for laid-back / relaxed listening sessions where one just wants to enjoy the music.

I’d recommend Polar Night earbuds if you want a natural, open soundstage and often listen at home or in quiet environments where isolation isn’t critical.

FreeWheelinAudioLuv2

Headphoneus Supremus
AFUL made another great IEM--wait, this is an earbud?!
Pros: Very full sounding profile
Treble extension is BOSS, with air and shimmer, but not overdone
Midrange is forward, incisive, and warm, but clean
Bass is punchy and adds some warmth to the proceedings
Soundstage is full and has great spatial cues
Cons: As with most earbuds, sub bass is not strong
Warmth can mask resolution
Fit might not be for everyone
The donut covers aren't ideal, and full bass foam covers recommended
AFUL POLAR NIGHT

Let's get started. Firstly, I'd like to thank HiFiGo for making this set available for review. I am so very appreciative for the opportunity, and my interest is always peaked when it comes to an AFUL offering. I either owned or have auditioned the AFUL Explorer, MagicOne, Performer 5, Performer 7 (5+2), and Cantor. Add the Polar Night to this list. Wait, this is not an IEM?! It's an earbud?! Well, obviously, from the aesthetics, this is very apparent! What I mean is from a sonic presentation, sometimes, you can get lost in the music, and you forget you're listening to an earbud, and you start thinking you got IEMs in your ears. That's not a line of distinction that is blurred with many buds, but in this case, it is. So we're off to a positive start, so buckle your seatbelts and prepare for a 100% unbiased impression with heartfelt observations and thoughts. Now on to the fun stuff.

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The unboxing experience is quite standard. Nothing screams out or wows, but sometimes, that's considerate. Box sleeve has nice picture of the buds on the front, with branding, and the back features specs and more information. The box itself is a nicely stated black with AFUL branding at the center, and it's hard, so it would make a great storage box for knick knacks or IEMs? On the inside you find the earbuds themselves and a nice case. AFUL always provides nice cases. This is no exception. The earbud themselves are understated, with the exception of the shiny, sparkly red and blue faceplates that also have AFUL branding. They are relatively small, but thicker than the other earbuds I'm used to. I imagine the thickness is to accommodate the finer tech that can be found on the inside of the shell to boost the bass and fine tune sonics? The stock cable is thin, tightly braided, and a bit stiff, but quite adequate, so even though I did have some nice upgrade cable in MMCX, I decided the cable was workable enough to just keep on the Polar Night, so all listening was done using the stock cable. Build seems sturdy. Hard plastic. Also included are red, blue, and black donut covers. I didn't find them particularly useful, nor did it provide a good outer ear seat, so I replaced them with some standard NiceHCK bass foam covers. This did provide a much firmer seat for my ears, and the bass was presented with a bit more fullness in the process. Also included are a shirt clip, some miniscule black plug looking thingamajiggers (tuning foams), and paperwork. That's the extent of the unboxing experience.

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THE SPECS :

AFUL POLAR NIGHT

TECHNICAL INFORMATION
:

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Frequency Response Graph provided courtesy of AFUL. All rights reserved.

PRICE : $179.99

Available for purchase at this location.

The Gear :

What did I use for my listening sessions for my review??

This was a smaller source sample than usual. With earbuds, it's all about portability and economy, and so this was my approach as well to source choice. This included several untethered DAPs, including the Cayin N3 Ultra in both Solid State and Modern tube mode and the FiiO JM21 (high gain mode). Tethered sources include the Sony NW-A306 + Dethonray Clarinet (Rock fw) + Dethonray DAC, Hiby R3 II + iBasso Nunchaku (tube mode, high gain) + iBasso DC Elite (not pictured. It's out on loan), and the Sony NW-A55 + FiiO Q3 II with Sony L27 interconnect. Warmth accentuated when required, and still played thru some brighter sources for balanced listening.

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Music used for the review and all my reviews in general?

Ezra Collective - Dance, No One's Watching
Robert Glasper - Canvas
Aki Rissanen Aleatoric - Aleatoric
Mareike Wiening - Reveal
Paul Booth - 44
Bob Marley & the Wailers - Survival
Rob Van Bavel & Joris Teppe - Dutch Connection
Kaisa's Machine - Moving Parts
Esperanza Spalding - Self Titled
Junior Kelly, Bounty Killer, and Capleton - The Good, The Bad, and the Blazin'
Martin, Glasper, 9th Wonder & Washington - Dinner Party
Juan Ibarra - La Casa
Megadeth - Rust in Peace
Drive By Jehu - Self Titled
Cryptosis - Celestial Death
Crownshift - Crownshift
In Aphelion - Reaperdawn
Cradle of Filth - The Screaming of the Valkyries
Shuffled Classic Rock, Reggae, and Pop Music playlist

SOUND IMPRESSIONS
:

Dynamics : 4
Resolution : 3
Details : 4
Instrument separation : 4
Imaging : 4.5
Low End Impact : 2 (lacks sub bass)
Sibilance : 1 (No discernible sibilance)
Soundstage : 5

Overall score : 4/5

BASS/MIDRANGE/TREBLE :

The AFUL Polar Night, is the first earbud offering from stellar IEM maker AFUL. I've had the grand opportunity to hear their entire line of IEMs minus the Performer 8, which to this day has escaped my ears. Hope to remedy that situation in the future, along with get a chance to hear their upcoming quadbrid and planar IEMs? Anyways, I was certainly excited when HiFiGo reached out to review the Polar Night. As always, first impressions are always critical, and my impressions of the bass is that it's got depth and mid bass presence and punch. Now, by depth, i'm talking dimensionality. There's a spatial awareness with this IEM that's very open back headphone like. I do not mean depth as in sub bass rumble shake, as this is an earbudm, and almost no earbud I've ever tried or heard of can do sub bass rumble in any meaningful capacity. It's just not something, due to the very nature of the seating on the ear, and the open backness, that allows for sub bass to flourish. That said, the mid bass has a nice presence, where it's punchy and has heft, and a decent degree of note resolution and snap. It's adequate. I wouldn't say it's a strong suit, but there's enough, along with the note weight and the depth of field, to provide a very satisfying bass response for an earbud. On bassy tracks, you don't feel you're really missing out on much, and that's a positive indictment on the bass implementation of the Polar night. So think a bass that's similar to the AFUL MagicOne, the single balanced armature IEM with the funky cool sound tubes that helps the M1 with it's bass response, which in BA's, is typically anemic. The Polar Night bass is definitely not anemic, and actually provides a refreshing presence, especially the textured and punchy mid bass. It also casts a bit of warmth onto the lower midrange, so it gives the midrange a warm character and some much needed note weight.

The midrange, as mentioned is warm, lush, and forward. It's not a recessed midrange, but it's also not the most resolving. Now I still gave this high marks for detail retrieval, as while listening to some soft jazz, I was able to pick out some voices very faint in the background speaking to one another, obviously in the studio, but it's a detail I hadn't notice before. Now, because the warmth does mask the resolution quite a bit, I wasn't able to make out what they were saying, but the fact I could pick that out in the mix was testament enough. Note weight is excellent, but again, dulled in resolution due to the warmth added to the midrange. That would be my major beef with the Polar Night, would be that there's a sullen, and fluid texture with pianos and keyboards, with a naturalness, but it's a soft weight. There's no sharpness to the midrange, even when you want it. Instrument separation, spatial dues, and imaging are excellent. That's one of the first things that jumped out at me with this bud, was the soundstage, the placement of instruments, and the dimensionality were very headphone reminiscent, and have a lovely flow and placement to them. Depth and width are exceptional, though it does lack a bit of height. It's just nice to listen to an earbud that doesn't have recessed mids, and there's a presence to them, even if it's lacking a bit in sharpness.

The treble region I would describe as politely incisive. There's enough air and shimmer to make you feel you aren't missing out of any detail in the top end, but it's not over the top, overly crisp, or extended. Once again, I'm reminded of the treble region of the MagicOne. This is a very similar approach, but maybe just a touch more naturalness in texture with the Polar Night. There isn't BA sheen or even cheap DD driver metallicness in the treble, but a smoothness and texture that is very pleasing, and incisive. It does shimmer, but not for days. It's a warm refined glow, vs a bright strident one. This is a plus. There's also a noticeable dimensionality to the treble, as there is with the bass. This helps with orbital detail, which is a nice touch. While the midrange is the star of this show, the treble isn't too far behind.

So with a balance from mid bass through mids through treble, and with a 3D dimensionality that helps define instrument placement and details front and back and side to side, there's a funness and wonderment to the musicality of the Polar Night.

Comparisons :

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Fengru JZ32 ($17.00) : Since I've sold off the majority of my earbuds in the past 6 months (I really had no idea I would be reviewing earbuds, and I didn't really use them that much), I didn't have but one to compare the Polar Night to. Now I have the JZ32 because a few months ago, I ended up getting two ear infections, and some ear tenderness, so to alleviate some of that, I decided I needed a pair of earbuds for when those types of medical situations arise. I didn't want to spend too much, but after some extensive research, the JZ32 came into view, and this was a bullseye purchase. The large Beryllium drivers are plenty capable, and actually have a more resolving midrange and the treble is crisper and more extended, without being sibilance or strident. But that's where the comparisons end. The Polar Night has a fuller and more warm low end, that's also providing more note weight to the midrange. The JZ32 has more snap, and possible a bit more note resolution, but it's drier in that transition from the mid bass into the lower midrange, so cleaner and leaner midrange, and more recessed, Also the spatial cues and the dimensionality are a distance second to the Polar Night, even if the cleaner midrange might make you think it would provide better detail retrieval, it does not, due to the recession. So they kind of balance themselves out. Both buds are using monocrystalline copper cables, with similar built and thickness. The Polar Night is more refineed, fuller, weightier, and the midrange is more forward. If you're aim is to get more note resolution and snap and speed out of your bass (say funk, extreme metal, or acid jazz), then the JZ32 would be your natural reach for these genres, but for hip hop, reggae, rock, Prog, contemporary jazz, or R&B, the Polar Night is a better choice, as the scene is fuller, more dimensional, and musical. Advantage : AFUL Polar Night.

AFUL MagicOne ($90.00) : This is an IEM!! What are you doing comparing these two?! Well, to answer your question, it's because technically, as well as sonically, these two have a lot in common, at least in execution. Both rely on sound tubes to manipulate the fullness and response of the bass, and in the case of both, the mid bass is punchy and fun, while the sub bass is nigh absent. The midrange of both is the star of the show, with the AFUL MagicOne providing a even more forward presentation, with much greater note resolution throughout the frequencies, but most directly, the midrange. The resolution and incisiveness are greater, with less warmth and lushness. I'd say they are both a measure of musicality, but the Polar Night is thicker and more note weighty, while the M1 has a thinner, leaner note weight and overall tonality. It's not lean, per se, but cleaner. Treble is very similar in extension, control, and air. I think texturally, the Polar Night is better due to the single DD naturalness of the tone and texture vs the BA tone of the MagicOne, which does show itself in the texure and tone on the top end, but it's very controlled, so at no point is it offensive or crispy, just like the Polar Night. I think where the Polar Night truly wins out is in the soundstage and imaging, where you have a very dimensional and spatial stage, whereas the stage of the MagicOne isn't very large, and certainly lacks a bit of dimensionality. The Polar Night is fuller, warmer, more musical, and spatially affirming. Advantage : AFUL Polar Night.

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CONCLUSION :

Warm, musical, and 3D dimensional, with a midrange that shines. Whodda thunk it with a earbud?! Right?! Well, the Polar Night deliver this and more! what a debut show out for AFUL! It's first earbud, and they hit it right out of the park! If you're a fan of AFUL, then you know there should never be any doubt, but in this hobby, you just never know? There's been much hyped product that ended up being stinkers (Tri Star River or Nice HCK F1 Pro anyone?!). Thankfully, in this case, the sonics lived up to the anticipation. The cable is nice enough that you don't need to cable roll if you don't want, and there's enough balance across the board for a bud, that you shouldn't find much want while listening to your libraries, as long as you keep in mind you are listening to an earbud, so there are inherent liabilities to all of them. This is a tiny earbud that plays back like an open back headphone (I'd say these are actually better than my Sennheiser HD599, a legendary open back, and sonically superior to the lean and not very mean closed back Status Audio CB-1). Over time, you do forget that you are using buds, and that's the truest indictment on just how good these are, that as long as you aren't cognizant that you have the Polar Night in your ears, you can't tell the difference sonically, at least in terms of quality playback, to an IEM. This is the pathway forward to my utmost recommendation of this bud. It's BOSS LEVEL sonically, and I've reached for it often, which is everything you need to know about how good they are, even if you skipped this entire review down to this last sentence.

RECOMMENDATION LEVEL : TOTL EARBUD BOSS RELEVANCE - HIGH 9/10.

Thank you so much for reading and remember to be water with your audio luv! When you do...AUDITORY ZEN UNLOCKED!
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avishifi
avishifi
Great review man! But I am still not convinced to try an earbud though 🤪
FreeWheelinAudioLuv2
FreeWheelinAudioLuv2
Earbuds aren't for everyone, and if you want to dip your toes, start with something like the JZ32 and then "graduate" to something like the Polar Night if that cheaper one tickles your fancy and stokes your curiosity for a sonic step up?

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