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Preface
I am writing this review using my Launch Edition model of the Singularity, released as the first 100 models. The difference between the Launch Edition from the normal production is the Launch Edition has a 24k gold plated ring on the faceplate while the normal version uses an anodized aluminum ring.
Overview
Introduction
Singularity is the first independent IEM release from Nightjar Acoustics, they were released after years of research on single-dynamic earphones, they boast a massive bass response with a natural midrange and treble timbre, which IEMs that were made to focus on boosted bass were previously known for making large sacrifices in midrange and treble tuning. 3 main technologies went into the making of this impressive IEM, Timbre+, LoFlex, and CAthedral. Timbre+ was made to prevent the usual metallic timbre that comes with good technical performance in single DD IEMs, LoFlex is a pressure release system preventing driver-flex while keeping a good seal for the boosted bass, and CAthedral is a chambering system used to create improved soundstage, layering, and intricacy.
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.
What's in the box
Nightar Acoustics Singularity
Nightjar Vanguard (2-wire stock or 4-wire upgraded / launch edition)
Metal puck case
4.4mm, 3.3mm, and 2.5mm cable termination connectors
Cleaning cloth
Warranty card
Divinus Velvet eartips
Nighjar 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 is 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 its 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.
Technical Performance
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. I can't say how much the CAthedral technology is doing for sure, but I can appreciate the layering in the midrange and treble despite the warmth and lower frequency boost and darkness in the treble.
Sources
My testing was mainly done through my Questyle M15i streaming Tidal from my iPhone.
I also tested on my FiiO BTR17 through BlueTooth mode as well.
Conclusion
The Singularity scores exceptionally well, earning an S+ rating. This comes from its impressive ability to be powerful, and weighty, and remain natural and smooth without a large drawback in technical performance.
This is a truly special IEM, with powerful bass and impressive timbre. If you are a low-end lover or want a high-end warm tuning and appreciate handmade IEMs with beautiful craftsmanship, I can't recommend this more.
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