Nightjar Acoustics Singularity

My Impressions of singularity

First of all, a huge thanks to the Audio Geek Brother_Hood of Audiophiles and Sandeep Bhai for allowing me to try the Singularity.

Things to know:
I’ve had the Singularity for around 10 days. My source was the Hiby R6 2025 and Apple Music. All impressions are with the stock cable and Divinus Velvet tips.

Let’s dive in!

Build, Comfort, & Looks:
The Singularity is superbly built, with an aluminum shell that feels like it will last a lifetime.

The shell size is small, and the nozzle isn’t too thick, making the Singularity a comfortable IEM to wear for extended listening sessions.

The stock cable looks and feels great in hand, and I don’t think it needs an upgrade cable. The chin slider is the best I’ve used.

As for the looks—two words: Subtle luxury. The black shell with a golden donut on the faceplate, complemented by the matching cable, gives it a very premium feel.




And now, the sound… Oh boy.

Bass:
The bass is the first “wow” aspect. As soon as you start listening, you’ll immediately notice the quality of the bass—it never overpowers the other parts of the music. The quantity is just right for me, and the quality is a chef’s kiss. The depth and impact are amazing.

Midrange & Timbre:
“Wow” number two—the realism of vocals and instruments is addictive. It feels like you’re experiencing music live—something you have to experience for yourself. It’s very hard to stop listening to music once you have the Singularity on. Shankar Mahadevan Sir (an amazing Indian artist) sounds godlike!

Highs:
Two words: Smooooth operator!
It’s detailed, clean, and never gets fatiguing.

Soundstage & Separation:
It has a big soundstage for an IEM, and the instrument separation is fantastic. It’s very easy to pinpoint where the various elements of the music are. Just close your eyes and enter the musical world created by the NightJar Acoustics team!

Conclusion:
There are levels to this.
There’s a reason why an IEM with a single dynamic driver costs as low as $20, and the Singularity costs $1,300 with a similar single dynamic driver configuration—and it’s absolutely worth it.

NightJar Acoustics has redefined what a single dynamic driver can do. An absolute masterclass.

Preface

This review is based on a loaner unit I was sent for testing, but I found it special enough that I plan to purchase a set for myself. All thoughts and opinions are entirely my own.
My rank list:
https://docs.google.com/spreadsheets/d/1n_i6a_GBhlwjjq3N5mxKBWkCufEu8mbfqJrfdv8kkDQ/edit?gid=0#gid=0

Overview

Sound
I will dig deeper into each aspect of the sound a bit later in the review.
Overall the Singularity sounds bassy yet balanced with great timbre. The first thing you notice is the deep impactful bass, there is more of it than what I consider neutral but it never leaves the realm of balanced for me. The slight upper mid forwardness especially helps with keeping an overall balanced sound never letting the bass get too overpowering. Despite the bass boost the mids are ever-so-slightly forward and presented with amazing timbre and naturalness, helping with the natural timbre is the tame treble response, the treble is more “veiled” than other sets in this range such as the Symphonium Crimson which can lead these to sound dark to some people but I do not find it dark.

Unboxing

• Nightar Singularities
• Nightjar Vanguard (2W stock or 4W upgraded / launch edition)
• Metal puck case
• 4.4mm, 3.3mm, and 2,5mm cable termination swaps
• Cleaning cloth
• Warranty card
• Divinus Velvet eartips
• Stickers

The stock cable and tips fit very well for the Singularity and I found no reason to swap or change for either aesthetics or sound. Everything included in the package is extremely high quality and I appreciate the effort put into the quality of everything. The Vanguard cable is extremely soft and flexible, a bit too thin for me but not bad enough to complain about, the accessories on the cable are all metal and feel solid and sturdy with a Y-splitter that I find adorable.

Design / Build
The Singulariy’s are made of anodized aluminum with a 24K gold ring on the faceplate (at least on the launch edition, I’m not sure about newer units.) Not many IEMs above the price of $1k are this small and as someone with smaller ears I appreciate the smaller shells out there, I could see the small shell being an issue for some with large ears though.


Sound
Bass
This is where the Singularity eclipses its competition. The bass is both impactful and deep, smoothly sloping into the sub-bass without a shelf. This gives it a more mid-bassy than sub-bassy character, which I prefer.
The first thing that stood out was its depth, songs with deeper bass, which often get lost even on higher-end IEMs, were rendered unmistakably clear. The bass isn’t overly tight, so it retains impact, yet it’s not loose to the point of sounding ‘puffy’ or ‘boomy.’ It strikes a balance, offering adequate texture and detail while maintaining a natural, weighty presentation without becoming dry or too clinical.
Another thing I love about the bass is that there is enough to satisfy a basshead but not too much for people who prefer balanced-neutral sets (such as myself.) By that I mean it never becomes overpowering or leaves the realm of a balanced set.

Midrange
The midrange is executed exceptionally well, the timbre is outstandingly natural and realistic with vocals, guitars, strings, and all instruments.
The slight upper mid forwardness keeps vocals cutting through the mix alongside the boosted bass region. Female vocals aren’t too bright sounding but aren’t muffled either and the Singularity finds the perfect spot between the two.
The lower midrange is thick, giving a nice satisfying body to vocals and instruments that call for it. Female vocals can sound slightly husky on some tracks but this is not usually the case.

Treble
There isn’t too much to say about the Singularity’s treble but my few notes are that it's more relaxed than most IEMs at this price range. I never hear any sibilance or harshness in any track, even in brighter mixes. The upper treble while relaxed is still airy and keeps the mix sounding open and not cramped, the treble is also well-textured and detailed but isn’t the Singularity’s strongest point. Not bad by any means.

Technicals
The Singularity is not amazing when it comes to technical performance so if you’re looking for a set that will blow your mind with width, staging, imaging, and separation these are probably not the best choice for you. With that said, they are not bad by any means, complex mixes don’t sound crowded and they don’t sound cramped or claustrophobic, just not outstanding.

Sources
My testing was mainly done through my FiiO BTR17 streaming Tidal from my iPhone
I also tested on my Questyle M15i through Tidal as well

Photo Gallery

NIGHTJAR SINGULARITY​

Purpose of Bass
If you ask me what the purpose of bass is in my music, I would like to quote this thing I heard this Year.

“Bass is like sweet; more is better but bad for health”.

Click to expand...

But my personal listening sessions need sweetness, and you can’t replace the sweetness with any other taste. My personal listening sessions are very different from my review setups. I listen to hip-hop mostly (Seedhe Maut, KR$NA, Raftaar, Umair) and for this genre Singularity is godsent product. It might not serve you well with every genre and I will talk about it later.

Good Bass To Me
The definition of good bass is straightforward to me, it must be full, should contain the thump, not too fast or too tight in it's transience, physicality is a much-appreciated to the presentation. The things I don’t like in bass - are, too much importance to either sub-bass or mid-bass that can affect the other regions, making it too thumpy or too hollow. I really don’t like bass effecting mid-range in any way or form, thinning or masking the mid-range is not welcomed in my listening sessions. I will discuss how Singularity maintains a balance between everything I look for in a Bassy IEM.

Subjectivity
Before talking about the tonality of an IEM, I should let you know that Bass alone can affect different parts of the frequency spectrum even though if it stays the same. If you ask about my ears, I am a bit perceptive of the bass frequencies which means if anything goes wrong with the bass, be sure I will notice that.

Music Compatibility
While using this IEM I listened to Hip-Hop and Pop most of the time. Nor that it can’t perform well in these genres, but these two genres sound breathtaking with this IEM. The low-end tuning is one of the best I have heard in an IEM, and I am talking about all the IEMs I heard. Not only this, EDM/Disco sounded very good with them even though it might not perform very well with Live Recording/Western Classical. These genres might not be the truest form in this IEM, but I can guarantee that it would be one of the craziest yet refined experiences I had. And the best part Timber stays intact for the most part.





Features
Singularity embeds a few features that one might find interesting although I don’t have knowledge of how these things work internally in this IEM.

Timbre +
This technology promises to serve non-metallic timbre even when the IEM is designed to produce brightness or a lot of technicalities. And I would say that it worked, because I wasn’t expecting this kind of timbral accuracy from an IEM which is producing this amplitude of bass.

LoFlex
This technology promises to eliminate driver flex from dynamic drivers. Although there is a huge debate on the negative effect of the driver flex. Some say that although driver flex is annoying it is harmless, some say otherwise. But guess what, LoFlex works in singularity, so you don’t have to worry about the longevity of the DD used in this IEM.

CAthedral
This technology promises to give the sonic representation a huge advantage in staging by tinkering in the Acoustic Chamber. Which I think works well in this IEM because it might not sound extensively spacious, but it will give you massive projection of the stage that won’t sound like a wall, instead it sounds like a real stage.

My Relationship with Bass
My ear canal is a bit smaller than average, so I sense bass a bit more than the normal ears. Along with the amplitude I detect bad bass very easy too, so to give you an example – majority of the IEM that is considered a good bass head IEM, rarely gets appreciation from me. The main problem I have with most IEMs is in the lower mids, sometimes they overflow the mids with bass amplitude and sometimes they undercut the lower mids a bit too much which negatively affects the whole presentation.

This IEM is provided to me by AG. They don't ask me to write anything, let alone good or bad. All thoughts and opinions are mine and 100% honest to my findings.

Click to expand...

Sound: Objective

Why Singularity Excelled in the Bass?
First of all, the contrast between subbass and mid bass is so good that the coherency factor of the bass is intact. The bass will make your eardrums rumble and make you feel thump at the same time. When a bass note comes it will make sure in your head notices that. Physicality is so well conserved in the music that it feels real even though it is not tactile. The amplitude compliments the implementation so well that it’s hard to put down.

Secondly, the lower-mids are so beautiful, it feels warm from the bass elevation, but it never got masked nor it felt unnatural. The vocals and instruments are so good in the lower registers that IEMs with much less bass elevation made it bad.

The only problem I felt with this much elevation was the treble. And it can be fixed to a great extent by using EA Cables and good synergistic sources. The Ares S II gave the IEMs a great fulfillment factor. This combo brings up the treble as well as the details that I miss in the presentation with the stock cable (Vanguard 2 Wire).

There are IEMs which can do all these things well too, but they do also come with some pitfalls. There are two things that saved this IEM from being mediocre,

The bass on Singularity is not hollow, which means the texture from 20hz to 150hz is intact and same, it doesn’t feel it lost authority in any way or form.

The bass on Singularity is also not pillowy, which means that the mid bass thump is there without messing with the subbass. The thump attack decay everything is top notch. Not too fast or slow, which gave it a very natural feeling even though it is way over the board in graphs.



Sound: Subjective

The soundstage of Singularity is a bit more expanded than what I call normal. Although I am not a fan of huge soundstage but the fact is, the stage is quite big on this one. As well as the projection, where it doesn’t feel like sound is coming from a small point of source.

The Imaging is not something that will impress you, but it improves with the cable rolling. Although the center image is quite pinpoint, the localization bubbles are a bit big too.

The Resolution is same as the Imaging. It improves with the cable rolling and with Ares II, I was satisfied. But with the Stock Vanguard 2 cable, I would’ve liked a bit more resolution.

The Dynamics are insane. With just one driver they managed to get the transience which is extremely good and fluid. I liked the most is the speed which is not super snappy and fast which gave it a more wholistic and natural feeling.

Conclusion
I can quit this hobby with Singularity and Twilight. Matter of fact, both are single DD IEM and there is no confusion that I would’ve gotten this IEM if I was not involved in reviewing IEMs. Singularity is the most fun IEM I listened to that does the fundamental tuning good. And paired with the Effect Audio Ares II and Cadmus II, Singularity becomes a beast that is hard to put down.

NIGHTJAR ACOUSTICS SINGULARITY- A SINGLE DD CAN DO A LOT

Nightjar acoustics singularity is from a well-known upcoming brand of audio enthusiasts who have been making news with a lot of good iems in the making. One such iem is their Singularity which has come to my attention.

DISCLAIMER-
The Nightjar Acoustics Singularity is part of a review tour organized by A.G. and Nightjar in my country. The sample belongs to the brand. I had the opportunity to listen to it for a lot of days for this review. This review is completely based on my experience with it, and all opinions, positive or negative, are my own and no one else’s. No external factors influence my review; only internal factors like my brain and heart influence it . Please try it yourself, if possible, since we all hear things differently. If you want to purchase it, you can buy it from the official product website from the link- Nightjar Acoustics Singularity.

SPECS-
- Bespoke 10mm Timbre+ Single Dynamic
- Anodised 6000 Series Aluminium
- Impedance- 43Ω
- 3Hz-20kHz
- Vanguard 2-wire stock cable and other multiple stock cables options are there with more price.
- Divinus Velvet and Subtonic House Tips

PACKAGE-
I didn’t get much of the package. But the package had just the leather case made of black with a silver nightjar on the case and it looked classy. The inside had the two iems and the cable. More packing things would be present like ear tips and all, but I didn’t get it for the review. The case is quite good and had felt on the top to give some padding. The felt on top needs to be a little thicker to add a little bit of more protection.

BUILD-
It’s small but the built is quite good with a black anodised aluminium shell. The shell is also quite light and easily goes into the ears. The faceplate has gold circular accents which is quite unique. But since this came after passing many hands, I see the black colour has come off on certain places, but careful handling is utmost.

Cable though is quite thin but doesn’t have any sound with movement. The plug is pentaconn and more cable options would be better to have. The similar colours on the cable and the iem is quite noticeable along with the beautiful golden moon on the cable. The cable is 7N OCC copper with 0.17 Ω resistance and a 25AWG size.


NOTE: This iem was used with PAWS1 for the review. It required a good deal of power of about 36-40 on volume on high gain. For me better sources would render this much better I believe, but I tried it with my A30s amp and Obravo V2 tube amp too, loved both. Now this review is based on my opinions and if you want to buy this do try them for once as we all hear differently.

This time we shall start with the female vocals.
VOCALS-
Female vocals goes quite high in the headroom and the vocal are quite consistent in the body of the notes. Resounding does work in the room and provides a bigger stage for the vocals to shine. The vocals are quite smooth, but the nuances are also present giving the originality to the voice. The vocal has a bigger base and body but not too much extension, there is a lot of room for vocals to shine with higher power, like I tried with my A30s amp.
Male vocals-the base and the body of the vocalist are quite big. But it does extend to the headroom when required. The thickness of a male vocals does come through. The roughness though is slightly reduced.
The vocals are present in front of you but slightly above the headstage and have an engaging listen the instruments are surrounding the vocalist.

MIDS-
The notes have great dynamism, and the details are wonderful. The notes are quite having a pretty solid base and well-defined body with good extension too. A little more height would be warranted. Each note is clear, crisp defined and has its own space in the head stage. The stage is quite wide too with spacing around the instruments makes it much better to listen to. The placement of the instruments is great and remain mostly around the listener and are in the X-Z axis plane mostly and a little bit of Y plane. The pianos are quite great with notes differentiation being emphasized along with notes definition and body. Similarly with the guitars they are beautifully executed and no hint of sharpness at all. The entire extension is beautifully done with placement and separation that's speaks a lot of good things for this iem. Resolution of this iem is quite great and it easily handles microdetails and everything with ease. But even the microdetails are beautifully done and are lovely to listen to. They have a wonderful presence and have good dynamics too. Mids are the best I have heard in a long time, a great mix of everything you would want for a wonderful listen.

BASS AND SUBBASS -
The subbass is also warm in totality and with quality rumble. The rumble has a good sense of definition to it but doesn't extent throughout the head stage. The base of the rumble is quite big with adequate attack speed that helps to listen to hip hop and pop music easily without mixing any of the sound frequencies. It was quite deep in subbass when required, rumbles enough to satisfy me and does fill the head stage too, but just before the corners of head stage. It does need a bit more extension so a slightly more decay would have been beneficial. A cable change may be what's required including a slightly wider bore ear tips which I sadly don't have now to test out (I lost one side). But given this rumble and deep subbass you would not feel a need for it at all, I can wholeheartedly say that as I am probably nitpicking here nothing more. This subbass is love as it is, a little more would be the cherry dipped in chocolate on the cake
The bass is big having a bigger body with a better base and has quite enough extension. It has a warm tonality to it and dynamics are such good that soft hits and hard hits are easily heard. Add the fast attack speed and quite apt decay, this becomes a quality and quantity bass monster. The tonal differences between different bass instruments are also quite easy to get. Even the type of material used as for the drums are even heard with each hot and that feels wonderful to listen to. Add great separation and details with very good smooth and warm tonality, it becomes way too easy to get what is going on where in the entire head stage, and that's a very important characteristics of an iem and it does it without breaking a sweat.

TREBLE-
It's energetic and has a warm tonality with good presence in the head stage. But it doesn't quite surprise you with the sudden dynamics change and hence is quite smooth to listen to. The notes are quite well defined and have a bigger base and body, but the extension would be a bit more required. The attack speed is quite apt and hence doesn't lag behind. It has the headroom but doesn't utilise it unless it's a large trumpet or saxophone emphasized in the song.

VERDICT- All in all this is a wonderful set and probably the one of the most wonderful sounding iems I have heard in a while, a heartful recommendation if you can adjust to a good smooth treble.

Disclaimer



This review reflects my personal and subjective listening experience with the mentioned audio gear product. I would like to thank Audio Geek Brother_hood of Audiophiles for organizing this review tour in my country and allowing me to share my thoughts on the product, it doesn’t influence my review in any form and nor I am compensated.



Before I start, I would like to mention that most of my impressions of the gear is based on the source and test tracks mentioned, so YMMV.



Sources: Earmen Angel and Cayin RU7





Design and Build Quality



The Nightjar Singularity is meticulously crafted, featuring a sleek, ergonomic design that feels luxurious and durable. Its housing is made of Anodised 6000 aluminium shells which ensures a lightweight yet robust construction.



The nozzle is well-angled to provide a secure fit, and the build quality is solid. The cable itself is high-quality 2W Vanguard. The overall feel of the IEM is premium, suggesting it could withstand daily use without showing signs of wear.



Accessories



Since this was a review unit I just got below accessories



High-Quality Cable: Vangard 2-wire Cable with OE Multi-Plug

Protective Carrying Case: A sturdy carrying case is included to keep the IEMs safe during travel.





Comfort and Fit



Comfort is a strong point for the Nightjar Singularity. The ergonomic shape allows the IEMs to fit snugly in the ear, providing a secure and comfortable listening experience, even during long sessions. Its lightweight design helps reduce ear fatigue, making it suitable for hours of continuous use. I found Azla Sedna Earfit Crystals to be the ideal tips for Singularity.



Sound Quality

The Nightjar Singularity stands out in its tuning approach, aiming to deliver a balanced and natural sound signature with a touch of musicality.



Bass

The bass response on the Singularity is controlled and well-extended, providing a satisfying low-end presence without overwhelming other frequencies. Sub-bass reaches deep, offering a rumble particularly noticeable in bass-heavy tracks. Mid-bass is tight and punchy, lending a sense of rhythm and drive to the music. The bass maintains a level of accuracy that avoids bleeding into the midrange, making it suitable for genres like jazz, classical, and acoustic music, where bass precision is more desirable than sheer quantity. My playlist includes demanding bass tracks, and the Singularity demonstrates its capability there.



Midrange

The midrange is where the Nightjar Singularity truly shines, characterized by a clear, natural, and slightly forward presentation. Vocals, both male and female, are rendered with great clarity and presence, standing out in the mix without sounding harsh or recessed. Instruments such as guitars and pianos are reproduced with rich timbre and realistic texture, allowing appreciation of subtle details in recordings. The upper midrange is carefully tuned to avoid sibilance, making the IEM versatile for various music genres and recording qualities.



Treble

The treble on the Singularity is smooth, detailed, and extended, with just enough sparkle to add excitement without causing fatigue. The tuning ensures that high-frequency sounds like cymbals and hi-hats are crisp and defined, but not piercing. This balanced approach to the treble adds airiness to the soundstage and improves the perception of space and imaging, key elements for a premium listening experience.



Soundstage and Imaging

The soundstage of the Nightjar Singularity is expansive, providing a sense of width and depth often not found in similarly priced IEMs. The instrument separation is excellent; however, the imaging could be better, especially given the IEM's price point. This is one caveat I have with Singularity.



Value for Money

The Nightjar Singularity offers excellent value for money in the mid-to-high range IEM category. While it may not be the cheapest option available, the quality of sound, build, and accessories justify the price. Its balanced tuning makes it suitable for a wide range of music genres, and I particularly enjoyed it with Bollywood and classical music. Compared to other IEMs in the same price bracket, the Singularity stands out due to its refined tuning, comfort, and overall presentation. It may not appeal to bass heads seeking a heavily V-shaped signature, but for those who prioritize clarity, detail, and a natural sound, it is a compelling choice.



Conclusion

The Nightjar Singularity is a top-tier IEM that delivers a balanced and natural listening experience with a touch of musicality. It offers a well-rounded package with a premium build, comfortable fit, and refined sound signature that will appeal to audiophiles and music enthusiasts alike. While it may not cater to those who crave bass-heavy or extremely bright sound profiles, its overall presentation makes it a desirable option for discerning listeners.

My experience with Nightjar Singularity IEM.
Introduction
The unit was sent to me as a part of a review tour conducted by Audio Geek Brotherhood.
I received the unit in its retail leather case, which comes with the iem and was of good quality & build.
The unit itself was very well made and looked gorgeous it was completely black with a golden halo on the front of the shell, a design i don't think is inspired but innovated.
It is also very lightweight considering all the technology implemented into it , almost weighing equal to the Sony wf-xm3 wireless buds.
The cable is also very well made with no problems with sound distortion when rubbing on clothes.

Bass
I would like to comment on its best feature first . The bass on this iem is extremely well tuned it almost turns into a perfect subwoofer experience after a bit of eq. It has great depth, reaching deep lows with ease with proper vibrations felt inside the ear canal. It doesn't feel overloaded or overwhelming, just pure joy to listen to.
Applying room effect filters or surround sound emulation expanded the sphere of bass by quite a big margin, and it started feeling like a well placed distant subwoofer (great for movies)
Getting this much power from a single DD Iem without affecting the rest of the spectrum is a technological feat in itself.
No complaints at all in this department

Treble
I found the treble to also be perfectly tuned, which extended quite a bit but never felt irritating, although treble heads might not be impressed any laid-back listeners would definitely enjoy this experience.
During very heavy tracks with lots of instruments, the treble never lost its energy and synchronized well with the track.
I found the iem to retrieve directional cues extremely well & the details also never disappointed.
Mids
Mids on the singularity are very sweet , joyful & a pleasure to listen to. The male & female vocals both are presented accurately, and in my experience, the presence of them feels intimate.
Instruments sound precise, too, on this tuning.
I never felt anything off.
Soundstage
It is in the soundstage that this iem meets its first roadblock. The stage is not that great , everything feels intimate with reduced depth and width, which i was unable to improve with tip rolling or applying filters.
Although it is not bad but after its glory in the other departments, i was expecting quite a lot in this area, too.
Conclusion
Nightjar Singularity is an extremely capable iem worthy of a blind buy suggestion due to it's beautiful tonality, impressive presentation in all 3 spectrums ,being very lightweight and in the list of very few iems that can emulate the power and feel of a true subwoofer.
Making a single DD shine this much takes a lot of R&D, and i think Nightjar hit the ball out of the park on this one.
Although the stage is a bit underwhelming for me, it might not be an issue for others since i am a bit finicky when it comes to stage.
A big thanks to Sandeep & Kashyap Ji for organizing the tour and including me in it.
My best wishes to Audio Geek Brotherhood and the wider audiophile community.
Will look forward to more offerings from Nightjar Acoustics

Thanks to Audiogeek for the opportunity to try the Singularity for an extended period of time at my own place and pace. It really helps to understand a gear and enjoy it more than a show floor or meetups for me personally. I'm sharing a short write up about it based on my preferences.

Build and accessories
The Singularity is a single Dynamic driver IEM that comes in a black metal shell with a eye candy golden accent ring in the centre. The build is solid and can last long even heavy use.



The cable is handmade Nightjar Vanguard which suits the black iem. It even has a golden cable split to match the iem shell. I received a nice leather case along with the iem. Great package for the price.


Sound Impressions
Initially I tried the Singularity with Hiby RS6 and it sounded great with excellent subbass rumble and lush mids. Treble was even without any noticeable peaks.

I switched to my desktop setup after a couple of days and was amazed with the level of scaling in sound compared to the RS6. The driver used in the Singularity is receptive of the additional power and vocal image expanded considerably. Literally felt like listening to a headphone.

Definitely there is boosted bass but it's mostly in the sub region without affecting the mids. It's textured and rumbles like a good sub woofer. Mids are forefront and nuances in vocals are portrayed with ease. Instruments and vocals sound very natural, timbre is comparable to a HD600 which I like the most in headphones. Treble wise the details are present and are not in the face, unlike many treble boosted iems which give a fake sense of resolution.

The iem images big and sounds cohesive with good instrument separation. Dynamics is excellent and so is the overall Tonality.


Conclusion
The Singularity is for people looking for a natural sounding iem who prefer bass extension and slam. It's great for bassheads too who don't want to compromise on other aspects of sound. Excellent performer technically for the price. If you're looking for the last bit of details or a very neutral iem it maybe not for you, but for everyone else who prefer to vibe with music the Singularity is an excellent choice.

Nightjar Singularity Review



I got Singularity as part of review tour held by Audio Geek India. I am not related to Nightjar Acoustic in anyway possible, and all my impressions here are my own and based on the sources I have and on my listening capabilities.

About

Nightjar Acoustics got into limelight with their first IEM, Singularity, which is a single DD offering from them. Singularity uses a bespoke 10mm timbre+ single dynamic driver rated at 43ohm. It indeed needs better power to shine at its best. Its shell is made of anodized 6000 series aluminum shell. It comes with a 7N OCC pure copper Vangard 2-wire cable with OE-multiplug. You can also order its 4-wire cable as stock. Fit and finish are solid all through.

Sound Impressions:

I tried Singularity IEM on quite a few sources, and I have settled with iBasso DX260 and Cayin N7/iBasso PB5 Osprey combo to be the apt ones since Singularity does need power to shine and these sources have ample of that. I tried Singularity on Cayin N7 alone but found out that N7 on its own isn’t good enough to drive this IEM and sound quality out of it is very apparent for the lack of power and quite disappointing. So, adding iBasso PB5 Osprey portable tube amp to N7 took Singularity to its optimal performance level. Enough with the extras, now on to the main review. I have tried to describe Singularity’s sound quality with respect to the different sources I tried and with an upgrade cable, which I feel is best fit for it.

Source: DX260

w/Stock Cable

Singularity does need more power to shine, so I kept my DX260 in high gain all through my time auditioning it. The volume range hovering between 30-33.



Singularity indeed sound very good with DX260, with deep and controlled bass, clear, detailed and natural mids and crisper treble. Bass, is typical of dynamic driver, very punchy and good slam. Sub bass has good rumble and goes quite deep. Mid bass has decent slam. Bass isn’t at basshead level in this pairup, but still has enough to make it very enjoyable. I wish it had little more slam and reach deeper than what it is, but still carries very good punchy bass. Mids sound very natural, clean and detailed. Mid-section has good space, definition, and natural timbre with good note weight to the vocals. Vocals are placed at the center of the stage. Male vocals sound natural and lifelike. As does the female vocals. Female vocals carry same naturalness with very good extensions. Female vocals sound energetic. Overall, an excellent mids from this pair up. Soundstage has more width than depth, with airy and spacious presentation. Imaging is very good and precise in instruments and vocals placement. Instrument separation is very good all through, Singularity doesn’t have any issue with busier tracks, with clear space maintained between all instruments involved with no congestion whatsoever. Detail retrieval capabilities are very good. The single DD here is very coherent and maintains excellent dynamics all through. Instrument notes carry good weight to them. Treble has good extensions, making it an airy listen. Cymbals sound crisp. Treble region has very good details and good sparkle is maintained all through. Treble isn’t harsh or fatiguing by any measure, making it perfect for long listening sessions. Personally, though, I would have liked more sparkle out of it, but no complaints with what it’s producing out of single DD.

w/Verus Audio Lavender 6 Cable

Quickly swapping the stock cable with Verus Audio Lavender 6 cable brought some improvements in few areas making these one of the best IEM-cable matchups I have heard of late. Especially in how it improved the Singularity. Lavender 6 brought more clarity to the sound, made treble have more sparkle and more energetic than stock. Bass too got improved, now sub bass reaches deeper than the stock and with much better mid bass slam. All this while maintaining same excellent mid-section of Singularity, Lavender 6 also makes mids cleaner. Sense of space, air, and clarity improved all through the frequencies with Lavender 6 cable. I highly recommend Lavender 6 for those who have or like Singularity. It became my go to cable for Singularity all through my time with this IEM.

Source: Cayin N7+iBasso PB5 Osprey



Switching to the combo of Cayin N7 and iBasso PB5 Osprey, Singularity on Lavender 6 cable sounded more open, and holographic. It sounds more engaging and dynamic. Overall sound leans towards slight warmth, making it a very musical listen. Stage width and depth increased making it sound holographic. This combo brings much needed extensions on both ends. Bass got better deeper reach and treble is more energetic and for some, this may be little peaky. Drums sound authoritative, cymbals get crisper. Mids are little forward placed and sound natural and engaging. Female vocals are very energetic. This stack brings emotions to the mids section. Technically I found this stack slightly less technical than iBasso DX260 but adds more musicality to the overall sound.

Source: iBasso DX260+PB5 Osprey

This stack straightaway brings improvement in clarity, reduced warmth and closer to neutral signature. Bass go deeper with better control. Mids here carry more clarity and better definition and are placed at center of the stage. Mids sound natural with very good dynamics. Female vocals sound very energetic. Soundstage has very good width and depth, clearly PB5 Osprey bringing more depth here, since DX260 alone doesn’t have good stage depth. Resolution and dynamics are excellent, especially the dynamic swings are very well presented. This stack brings more details to come forward. Instrument separation is excellent, Singularity doesn’t have any congestion even with some of the heavy music I have played. An excellent source stack for Singularity.

Verdict

Nightjar Acoustics Singularity is an exceptionally made single DD IEM, which has very good musicality and technical performance, if sufficiently powered sources are used. I found its performance on Cayin N7 alone, quite disappointing with loose bass and lesser treble elevations. Adding iBasso PB5 Osprey tube amp and an upgrade cable Verus Audio Lavender 6, changed everything pushing Singularity to sound at its best. I found iBasso DX260 alone to be having an excellent synergy with Singularity, but here too PB5 brought few improvements.

Anyway, I found Singularity to be one of the very good single DD offerings available in the market. It's not the most technical, but it balances technicality and musicality wonderfully with very natural timbre and tonality. I will wholeheartedly recommend this IEM, only if you can sort out the suitable source for it.

​

Introduction​

If you haven't heard of Nightjar Acoustics and the man behind it by now, now's a good time to get to know them.

Based in Singapore, Nightjar is arguably one of the best in-ear cable brands at the moment and is behind the cables for the renowned Subtonic STORM.

Chang, Nightjar's sole proprietor, is also part of the Subtonic team and it's in large part due to his passion and expertise that both Subtonic and Nightjar are flourishing.

Despite Nightjar's success, its pace of innovation hasn't stagnated. A few months ago, Nightjar unveiled its first in-ear, and the subject of today's review—the Nightjar Singularity.

The Nightjar Singularity used for this review is a personal unit.

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Unboxing​

The Nightjar Singularity is a single dynamic driver in-ear that retails for $1,300 USD.

The unit being reviewed is the launch edition with the upgraded stock cable, the 4-wire Vanguard (stock is 2-wire), which cost an additional $390.

The launch edition, now sold out, had a limited run of 100 units. Its faceplates showcase a polished 24k gold-plated ring and it comes packaged in a handsome Nightjar-branded bamboo box.

The unboxing experience is filled with character and has a sophisticated feel. The bamboo box adds a distinct touch and it's immediately apparent that a lot of passion and attention to detail went into the unboxing experience as a whole. Major plus points to Nightjar here.

The stock cable, Vanguard, is also super premium feeling. Both the 2-wire and 4-wire variants have great ergonomics and eye-catching, quality hardware. The termination is swappable between 4.4mm, 3.5mm, and 2.5mm plugs which come included.



Inside the box is the following:

• A pair of Singularities
• Nightjar Vanguard cable (2-wire stock, 4-wire for the upgraded cable)
• Metal puck case
• 4.4mm, 3.5mm, and 2.5mm swappable plugs
• Microfiber cloth
• Warranty card
• Subtonic house and Divinus Velvet eartips
• Nightjar stickers

Comfort​

The Singularity shells are small and lightweight weighing just 7 grams apiece. Its nozzles are on the shorter side, measuring 6.2mm wide and 4mm long.

The smaller nozzles can be a good or a bad thing. On one hand, it shouldn't be bothersome to listeners with smaller ear canals, but achieving a good seal can be challenging.

If you can get a good seal, the Singularity is comfortable enough for all-day use making it ideal for extended listening sessions, travel, and work.

Shell weight: 7g (each)
Nozzle width: 6.2mm
Nozzle length: 4mm

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Sources​

These are the main sources I used during the review process:

• iBasso DX320MAX Ti
• CMA Eighteen Master
• Shanling M9+

The Singularity is easy to drive so there shouldn't be an issue running it on any source. It sounds pretty good off an Apple dongle.

I tested Singularity using lossless files from Tidal and Pentaconn Coreir brass eartips. I elected for the Coreir brass tips because I found slightly accentuates the treble. I'll go over this in more detail in the sound impressions.

Sound Impressions​

Lows​

Measurements were taken on my personal IEC-711 clone coupler.

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The frequency response of the Singularity is L-shaped with a well-supported midrange, and a linear, unintrusive treble that some may find a tad dark-leaning.

Pre-listen, I anticipated being overwhelmed by the lows based on the measurements and this was the case, at least initially.

After getting more listening in I realized that while the Singularity does undoubtedly have a bass-forward signature, it coalesces well with the rest of its sound. For a bass-heavy signature, the FR still manages to sounds pretty balanced which may sound like a contradiction, but trust me when I say it just works.

Singularity has great bass quality by most metrics. It extends deep and can growl and slam with authority. The bass has a good weight with a softer initial edge. It's well-textured, fairly dynamic, and has a satisfying decay and dynamic driver "bounce".

As indulgent as the bass can be, it's not without issues. Singularity's lows are characterized by a warm, thick timbre that can occasionally come across a touch boomy or wooly. I also thought the bass could benefit from more agility and definition to go along with its muscularity, as well as better edge definition.

That said, I found Singularity's bass to be well-executed overall and I think the majority of people will find it enjoyable.

Mids​

Singularity's midrange is tokened by the same rich, lush timbre that permeate its lows. Both female and male vocals come across well-bodied, maybe a touch thick, especially on sources that already impart a generous note weight.

Vocals are overall pleasant but could benefit from more incisiveness and "breathiness". The midrange is fairly resolving but I felt that the perception of resolution could sound masked at times due to its thicker note weight.

Microdetails on stringed instruments like cellos and violins sounded a bit masked as well, though they had a pleasant timbre and solid microdynamics.

While sheer resolution is not the Singularity's forte, vocals and instruments in the midrange have an intangible enjoyability thanks to Singularity's excellent timbre.

Highs​

The treble on the Singularity can be characterized as neutral to slightly dark-leaning. It has a defined yet slightly rounded transient attack that could use more incisiveness, and is fatigue-proof all at once.

The treble is perceptibly peak-free with good extension but does have a gentle roll-off in the uppermost reaches of the treble. Due to its good extension, upper harmonics are well-captured preventing it from sounding overly dark or compromising timbre.

Overall, I found Singularity's treble to be serviceable and somewhat unremarkable. This isn't necessarily a bad thing considering many in-ears in Singularity's price range and higher are often littered with problematic peaks.

Even so, I would have liked a little more treble vibrance, airiness, and sustain. I found the treble polite and mostly complementary to Singularity's lows and mids.

Swapping to Pentaconn Coreir brass eartips helped give a subtle boost to treble presence and openness, but ultimately, Singularity's treble largely plays it safe.

Detail and Imaging​

As mentioned, I don't think resolution is a strength of the Singularity. I think the resolution is pretty good for its price point but I felt that some details sounded masked due to its thicker note weight.

Staging also comes across a bit intimate, though it opens up considerably on more powerful sources. Singularity scales pretty impressively as the quality of sources improve, perhaps more so than most other in-ears that I've heard.

Tonality​

Singularity has a tonality that emphasizes the low end but in a way that still manages to sound cohesive and balanced.

The note weight is slightly thicker than normal so I’d caution using it with sources that are already very thick and warm, like the HiBy RS6, that may push Singularity into muddy territory.

To my ears, Singularity shined the most on neutral/neutral-bright sources which I found played back most, if not all, of my music very well.

Dynamics​

Singularity has solid macrodynamic and microdynamic performance for its price bracket. To illustrate this, here's a test track that I use to test microdynamics:


On this track, Singularity clearly renders the microdynamic fluctuations among the string bows.

For macrodynamics, I like to use this track:



At the track's beginning, there is a gradual crescendo that begins from the onset of the two bass notes, peaking at the 2:06 mark. Then, it gets quiet again until a sudden dynamic surge at about 2:31.

The Singularity reproduces these macrodynamic swings very well. It won't give you Subtonic Storm or Annihilator-level dynamics but it's certainly not lacking in this regard.

Strengths And Shortcomings​

Here are some strengths and shortcomings of the Singularity:

Strengths:

• Rich, textured bass.
• Lush timbre.
• Safe yet engaging tuning.
• Great build, stock cable, and accessories.
• Lightweight and comfortable.
• Fatigue-free and genre-agnostic.

Shortcomings:

• Could be more resolving and incisive.
• May lack some treble vibrance for some.
• Some may find the tuning too safe.
• Minor bass boom/wooliness.

Intangibles​

Intangibly, I find Singularity's timbre very pleasant to listen to, especially for longer sessions. Its combination of great tuning, excellent timbre, and slightly rounded transients mean that it's largely genre-agnostic and free of fatigue.

The timbral and tuning qualities of Singularity are such that they won't unduly grab at you for attention, making them a good choice for more relaxed listening sessions and for work.

As a point of comparison, a set like the Annihilator that has an aggressive tuning and sound may get fatiguing or distracting quicker.

Broadly speaking, Singularity's timbre reminds me of the timbre of the 7th Acoustics Supernova which has garnered much acclaim. Both these sets sport relatively safe tunings as well.

If great timbre and competent tuning are high on your index, Singularity and the Supernova are both sets you should give some thought to.

Pro-Tip​

Having owned the Singularity for quite some time by now, I noticed that a lot of the timbral characteristics I mentioned originate from the stock Vanguard cable which has a creamy and smooth sound signature.

It's a very distinct sound and full of character, but if you wanted to try to achieve a tighter bass, added dynamics, or more clarity, you can always try some cable-rolling. A reason why you might try this is if you find Singularity in its stock configuration overly thick and smooth for your tastes.

Personally, I keep the stock Vanguard cable on, but I enjoy swapping cables now and again depending on my mood and playlist.

Comparisons​

Monarch MK3​

The Monarch MK3 is the successor to the immensely popular Monarch MK2, improving upon an already great product with slightly improved techs and a more engaging tuning. It is, in my opinion, one of the benchmarks at the $1k USD mark.

So, how does the Singularity stack up?

Starting with the bass, both sets have good texturing abilities and ample punch but suffer from some leading edge softness. It's been some time since I've heard the Monarch MK3 but I remember its transient edge feeling slightly bloated as well. I think Singularity's bass does a better job with feeling coherent with the rest of the frequency spectrum, whereas the Monarch MK3's feels a little more disjointed in comparison.

The midrange on the Monarch MK3 sounds more forward compared to Singularity's. Both sets have a nice midrange timbre, the Monarch's sounding sweeter and euphonic, and the Singularity's sounding thicker and honeyed. I hear the Monarch's midrange to be slightly more resolving with a more natural vocal decay, whereas Singularity's vocal decay seems to end prematurely.

The treble region of the Monarch MK3 is what I'd consider to be slightly elevated compared to neutral. It's resolving but plagued by a sense of forced detail, etch, and tizziness. On the other hand, Singularity's treble tuning is more neutral and reserved than the Monarch's. There's still plenty of detail with decent transient definition and extension.

Overall, I think the Monarch MK3 is better on paper, possessing superior techs and better value for money, but I think Singularity is a more refined product overall due to its relative lack of tuning flaws, better coherence, and better build/accessories.

7th Acoustics Supernova​

I first heard about the Supernova in Precogvision's review about a year or two ago where they were hailed as a set with near-immaculate timbre and coherency.

Since Singularity is a set that I also consider to have similar strengths, I thought these two sets would be fun to compare despite their $500 discrepancy in MSRP.

From memory, Supernova's bass had more of a mid-bass focus with good punch and bass dynamics. Singularity's bass is more balanced between sub-bass and mid-bass and slightly more textured, though its bass has a softer leading edge.

Both sets have a thicker, smooth timbre in the midrange. Supernova's vocals feel slightly recessed compared to Singularity's which sound like they're placed neither back or forward. Because of their smoothness, I see both the Supernova and Singularity as sets that can be used for hours on end with minimal fatigue.

Both sets have a mostly even, well-extended treble, with Supernova's having a touch more liveliness and sparkle compared to Singularity's.

Supernova has surprisingly good stereo imaging and sounds particularly wide. Singularity's separation and imaging are decent, if somewhat unspectacular.

Supernova's Achille's heel is its resolution which suffers from over-smoothing and some transient smearing, particularly in its midrange. Singularity isn't particularly resolving for its price either, but it does manage to be more resolving than Supernova by a decent margin.

Overall, these two sets are closer than their prices would dictate. Both sets offer some similar things, and Supernova is definitely a better value for money. But if you don't mind shelling out for a better build, stock cable, and resolution, Singularity may be worth a look.

Coming soon: comparisons to Symphonium Titan and Elysian x Effect Audio Pilgrim Noir

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Conclusion​

So, how does Nightjar's inaugural IEM fare against the best of the current kilobuck crop? Quite well I think.

While Singularity isn't likely to blow away those accustomed to top-tier techs around the $1-1.5k USD price range, it's an in-ear that I feel understands what it's trying to accomplish and doesn't abandon it all in the single-minded pursuit of resolution at all costs.

What Singularity is is an in-ear with a distinct Nightjar sound—a thoughtful balance of timbre, tuning, and good technicalities, all housed in a quality build, and crafted with passion and a clear vision.

All said, I think Singularity is a successful debut from Nightjar, establishing them as not only a cable company but as one of the few companies that can craft both cables and in-ears at the highest level.

Currently, Nightjar is a few prototypes into its sophomore effort, Singularity's big brother—the Duality. The latest prototype possessed the familiar Nightjar sound but with an even bigger bass and much improved techs.

It's clear that Nightjar is a company with a rising star. One that has already accomplished so much in a short span and that we can expect to keep pushing the envelope. I'll be keeping my eyes peeled for what they have in store next.

Hello everyone, and thank you for joining me. Today, I'll be reviewing the highly-praised single-DD driver iems, Nightjar Acoustics Singularity. These iems have been widely praised in the community. Nightjar released the first batch of iems in July 2023, and they sold out very soon. There have been more batch releases since then. I had the opportunity to borrow these IEMs from a friend for a few days, and it's worth noting that they had been used extensively before I received them, ensuring they were properly burned in. All these things I am going to mention in this review are totally my thoughts and not influenced by anything.


Rating Criteria:

I want to lay out my rating criteria before we start off. For me, the primary criterion for evaluating audio gear is its intrinsic value rather than its price tag. A higher price doesn't always correlate with superior quality, and similarly, a low-priced product can give enough listening pleasure for it to be called outstanding. I consider the build, features, and, most importantly, the impact on the listening experience. The fundamental purpose of audio gear is to enhance the listening experience. So for me, this degree of enhancement in the listening experience is a key determinant in rating a product.

Rating below 4: I really won't be posting reviews of such items unless someone has asked for them.
Rating of 4: The product is good, and some users may find it more satisfactory, but it does come with a few caveats, such as price, fit, etc.
Rating of 4.5: The product is excellent and comes with an easy recommendation, reflecting its high quality and overall positive attributes.
Rating of 5: This product can be deemed groundbreaking, a trendsetter, and an eye-opener and deserves a spot on everyone's list due to its exceptional features and outstanding performance.


Configuration (from the website):



Design, build, fit:

Singularity is a work of art. From the box to accessories to the iems and cable, everything speaks highly of the craftsmanship that Nightjar has put in. The bamboo box in which these iems come is so beautiful and special. Then comes the beautiful metal case, which has a very nice finish with ample space inside. There is a very decent collection of eartips, notably the Divinus Velvet Eartips, which also come with these iems.

The cable is something very special again, which is priced at 500 USD, and it pairs very well with the iems too. It's on a thinner side and tangles easily, though. I would have preferred it just a bit stiffer.

The iems are quite small, having a metal body that feels really sturdy. The nozzle lies on the shorter side and is angled slightly. Some people may have some fit issues. The eartip selection is important, as I felt it pairs well with some eartips with solid insertion to hold the iems in the ear properly. I paired them with the Azla SednaEarfit Light eartips, which give a proper fit with a decent amount of isolation. Notably, these tips also open up these iems more than the Divinus Velvet tips. Additionally, the Coreir brass tips help open up the sound as they give extra energy to the upper mids and treble region.

Additionally, there is a vent present on the iems which mitigates pressure buildup. I encountered no issues of pressure buildup during my time with them. I also never encountered any driver flex in these iems.



Sound Analysis:

Singularity boasts a highly musical and timbre-perfect sound. The sound has a warm signature that is very natural and rich in tonality, something that can align with everyone's preferences. There is a very good amount of bass, some great mids and a very coherent sound, which makes it quite pleasant. The smaller shells and non-fatiguing nature of sound help with long sessions.

Bass:

The bass is quite special on these iems. There is speed, impact, and a powerful bass, which goes really deep. The quantity is quite massive for a single DD iem. It's not a basshead level of bass, but there is surely a good amount of bass there, which can satisfy someone's hunger. There is a boosted bass, so this bass may perceived as not very crisp and precise, but it fits well in regards to a DD bass definition.

There is no bass bleeding into the mids, but the boosted bass does add to the overall richness in the sound. There is a noticeable subbass rumble, which makes the bass a lot more enjoyable. One good thing is that despite the heavy bass, there is no listening fatigue as I find with some other bass-heavy iems. This bass is just the right amount, quite enjoyable, a pure bliss. I find it quite incredible.

Mids:

The mids on Singularity are very special. They are sweet and natural, perfectly positioned—neither far behind nor too upfront. Mids have good weight and gains from the lower end, especially the lower mids. The vocals are rich. Both male and female vocals are quite open and lush.

The string instruments also sound very rich. The upper mids are quite controlled, and the extension of the string instruments is very smooth and pleasant with enough body. It does not have any sharpness up top, which makes it quite non-fatiguing to listen to.


Treble:

The treble on these iems is not quite a highlight. It lacks a bit of energy and air in this frequency range, resulting in a more laid-back and relaxed treble response. I am not much of a treble head so this quantity is just enough to me. Importantly, there's an absence of undesirable sharpness and sibilance, making these IEMs well-tuned and safe in that regard. It's worth noting that, despite the robust bass, it doesn't overshadow the treble, maintaining a balanced and clear audio profile without any sense of darkness.

The selection of ear tips can significantly impact the perception of treble. For a better treble experience, the Coreir Brass tips are the ideal choice, as they add a subtle boost of energy and openness to the upper frequencies. The sound dispersion is notably improved when using these tips.



Source Synergy:

Singularity is quite easy to drive. It has a good synergy with the sources I tried, LPGT and Earmen Angel. However, to my surprise, the Angel has a better synergy with these iems than the LPGT. Angel has a slightly bright profile and is quite powerful, both of which are added advantages for the IEMs. Angel adds a bit to the missing treble airiness in Singularity. The sound is more open and spacious, too. I absolutely liked their pairing with Angel. One thing to add is that these iems open up quite a lot with additional power. Paired with the Aroma A100TB amp, they opened up a lot with a massive, larger-than-life-like sound.

With the Astell&Kern SP3000, these iems sound quite open, as the dap adds a lot to the soundstage. The pairing with this dap is better than with the LPGT.

Cable pairing:

The included cable with these iems is truly exceptional, and I believe it requires no alterations or enhancements. Nightjar also manufactures some good-quality cables, and they have demonstrated their cable expertise with these iems, ensuring an optimal pairing. The default cable exhibits outstanding synergy, and its market value of 525 USD signifies its superiority over cables offered by many other iems manufacturers.


Technicalities:

The soundstage on Singularity is above average, if not very impressive. There is a good sense of spaciousness in the sound, and with some powerful sources, there is quite an improvement, and the stage spreads out far and wide. Imaging on these iems is quite nice, and you can position instruments easily. The resolution and clarity are very impressive too. The notes sound clean and crisp. I think for an iem of this price, the technicalities are more than impressive.


Comparision:

Sennheiser IE900:

IE900 is another much-respected single-DD iem. I find both of them equally good fitting. IE900 is weightless and simply disappears in the ears. With the right eartips, they stick quite nicely and easily inside the ears. Initially, while using the IE900, I had this sensation of the iems popping out quite often because I did not have the best-fitting eartips on it.

Both of these iems have different sound flavors to offer. Singularity has clearly a lot more bass (boom) than the IE900. IE900 has a good amount of bass but is not as overwhelming as Singularity. It's bass is crisp and precise. It has more energetic tuning with some spice up top. Mids and treble are more relaxed on Singularity.

Softear Twilight:

Twilight is another great single-DD iem. It boasts a timbre-perfect sound signature. Though it looks a bit bigger than Singularity, thanks to its super lightweight design, it's quite easy to use. The shape, though very unorthodox, does not bother me much.

Both of these iems are quite similar in their sound presentation. They have an almost similar technical presentation too. The big difference is obvious with the huge bass impact Singularity has. Mids and treble are equally relaxed on both of these iems. With the right amount of bass on the Twilight and more forward mids, as well as the significant price difference, it becomes tough to pick a winner between the two.






Conclusion:

When I tried the Sony IER-Z1R, it almost reminded me of Singularity. The sounds on these two are quite different, but somehow I related a few things. The bass on both of these iems is too good and equally satisfying, and they both are very musical iems. And for the people who have a fit issue with the Z1R, they can really find peace with the Singularity and not miss much.


To be honest, this iem has its own league. It stands out in the crowd of single DD iems with its massive bass and a very pleasant timbre. It feels like it has been tuned and designed following a rule book, keeping fun aspects in mind. It does not sound like a totl killer, nor will it give you a super wow kick in the beginning. It will grow on you. You can wear them comfortably for hours without any fatigue, which is what I really like about them. The overall package provides a very satisfying ownership experience. These iems have everything to be one's favorite. It's quite impressive of Nightjar to build something like Singularity, which gives a good insight into what one can expect from future releases. I rate these iem 5/5.

If the opening scene would be a spaceship landing on a desert-barren planet where, inside a derelict bazar partially drowned by sandstorms, a wooden box would be dug out of the sand, carefully set on a table and opened to reveal the Nightjar Acoustics’s Singularity — they’d be right at home.

While the IEMs have been paid at retail price out of the author’s pocket, I would nonetheless like to send my heartfelt thanks to Zeppelin & Co. for making this purchase possible — thank you so much guys!


The object — Equally ancient and futuristic in design, the Singularity are understated yet elegantly crafted IEMs one cannot help but feel are special.

The IEM have a nice heft to them and have an artisanal, handcrafted, flair that is a joy to hold — not to mention the choice of materials for this launch edition.

Having learned to appreciate thin and flexible cables, the 2-wire Vanguard cable with multiple terminations is not only a perfect match for the Singularity but also among the very few bundled IEM cables that strike a balance in terms of flexibility, looks and quality.


Fit & Comfort — The shells are small enough with well-rounded corners to fit most. The nozzles are however on the short and thick side. Although they did end-up providing a decently comfortable fit, they lean more towards Oriolus (usually a no-go here) than Campfire Audio (usually perfect).

The vents ensure a genuine pressure-free listen, even on bass-heavy tracks though one might be surprised to read what follows on this particular topic.

Tips used: Subtonic House Tips — note that tips will impact the sound a significant extent in this case and impressions can strongly differ in-between listeners


Sound — The Singularity present an engaging yet relaxing but especially, musical, natural yet articulate, and fatigue-free listen with one of the most natural timbre and soundstage heard to date.

Textures are present but will vary depending on how the track was mastered which is somewhat of an underappreciated quality. While the low-end emphasis is there, it does not hit anywhere near what graphs might imply. If the Singularity's low-end makes you ponder, the take here is that its quality is likely going to impress you more than its quantity. In that regard, the Singularity can surprisingly be genre-agnostic.

As the cable allows for swapping terminations, the following differences have been noted using sources with similar single-ended and balanced implementations: balanced sounds tighter and more controlled all the while remaining a relax listen whereas single-ended sounds less controlled and more relaxed.

Files / Sources used: CD-quality FLAC bought from Qobuz & Tidal HiFi streaming / Sony ZX507, NW-WM1AM2 (Direct Source: On) & Aune M1p


Conclusion — There’s IEMs you listen to and compare to others and there’s IEMs you just listen to. The Nightjar Acoustic Singularity distinctly fall into the latter category.

The wooden box and metal case of the launch edition are, for the price, just the cherry on top rounding up a boutique audiophile product with a sound I foresee many will hunt down in a certain online bazaar years down the line.

The Singularity are pure bliss and a genuinely singular IEM — hats off Nightjar Acoustics!