Beautiful write-up
My unit is coming tomorrow. Kinda Pumped up.
Not worried about the nozzle after watching the comparison though. For god’s grace it is not thick. I have tiny ears and thick nozzles are the worst for me.
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After watching online reviews I was sceptical about this product not because of the fit, but for the tuning they obtained. For obvious reasons, I don’t trust any IEM manufacturers blindly these days even if they obtain records of successful releases in the past.
As I imagined fit was not even a problem. However, the impressive factor of this IEM was how well they tuned it. Yes! I found it more appealing than the technical aspects for which they are getting praised.
Initial Impressions after 20 Hours
20-300hz
You just can’t expect BA to provide the quality of bass it is delivering. The amplitude and the quality both felt very authoritative and textured. Rumble is there, although not with a huge Physicality but Bass is there without being shy. The attack/decay is not too fast and very AFUL-like. The impact is real when songs call for it.
300hz-5Khz
Lower mids are a tiny bit more elevated than neutral and the bass gives it a husky tone and weighty definition when coupled with a big dip at the 10khz range. There’s a hump in 1khz that does add some special sauce to the midrange in terms of forwardness.
Now comes the impressive section of the FR, the upper mids sounded so smooth and detailed. It surpasses IEMs like Supernova in the 4Khz to 7Khz Range. Not just in the upper mids, the lower treble also feels very refined.
5-8Khz
This range was showing a bit of elevation in couplers like the Supernova, but it sounds way safer than what the graph is indicating. The lower treble is not harsh & it never tends to feel sibilant even on Orchestral tracks. I listened to Ecos - Coco Tomita ( https://shorturl.at/qiBrL ) and it was a super smooth listen, there was no point where I needed to lower my volume.
So they designed to use this IEM with a deep fit and the tips should be inserted to the rim. This is necessary since AFUL wanted to avoid any tip interference with the sound, I simply followed that and got the result. Improper fit/insertion will break the experience in this region.
I never got the fit of ER2SE and B2 right on my ears, and this one is way better for my ears even though it reaches deep. But I would have appreciated a resin extension instead of the steel one.
Not so impressive part
The 10-12 kHz range feels way too safe for my liking. A little more elevation through EQ fixed that but I would’ve liked a more upfront presentation of the vocals in higher register. But it is understandable since I am a treble head and elevation might thin out some of the instruments that occupy the lower mids for someone who likes enriched presentation. But few instruments suffer a bit for this reason.
Why I am buying this IEM
I received this package from a friend for review purposes. In two days I must have listened to more than 20 hours on this. And I decided to buy it for my personal use after day 1. The reason behind that is the pinna, it makes my favourite genres shine, for which U12T is still my No. 1 choice and I am a fan of something like Supernova.
CANTOR FEELS LIKE IT COMPLETES THE MIDDLE GROUND AND HANDLES BOTH OF THE PINNA PHILOSOPHIES PROPERLY BY BRIDGING A GAP.
My full review will be uploaded on YouTube next week, stay tuned.
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Take a look at my Cantor Review
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Aful Cantor Review
Pros
Excellent detail retrieval
High frequencies extend well without become sharp or fatiguing
One of the best technical set considering the price
Clean and inoffensive tuning
Bass extension and quality considering it is an all BA iem
Good sound stage
Competitively priced
Cons
Fit and tip sensitive
Slight timbre issue
Stiff competition
Tech inside according to Aful website
The Cantor features two advanced composite drivers: one for ultra-low frequencies (10-100Hz) with an ultra-thin, extended sound tube, and another for powerful bass. Precision-tuned acoustic tubes enhance depth, power, and clarity, transforming low-frequency performance with superior elasticity and bass depth. High-Precision 3D Printed Acoustic Tube Structure
The first technology is the acoustic crossover tube. It uses physical frequency division to adjust the sound frequency response of the pair. It has been fine-tuned and optimized to harmonize the sound waves from different tubes. This eliminates the peaks caused by the resonance of the unit under traditional frequency division technology.
The Non-Destructive Direct Drive Topology Technology in the AFUL Cantor earphones enhances sound clarity by eliminating resonance through an asymmetrical sound path, delivering extended, smooth highs. This advanced approach surpasses traditional damping methods, preserving high-frequency detail without harshness.
The AFUL Cantor’s Multidimensional Frequency Division Architecture efficiently integrates 14 BA drivers, each with a specific function, to deliver a cohesive soundstage with smooth frequency transitions and an immersive, balanced audio experience.
The Cantor earphones utilize high-precision 3D printing technology to create acoustic components with ultra-fine pathways as narrow as 0.15mm, pushing the limits of 3D printing capabilities. This precision enhances audio performance, providing bass with unparalleled depth and clarity.
It can directly act on the sound frequency response of the pair and helps in overcoming peaks caused by the resonance of the unit under traditional frequency division technology. It also gives the balanced armature drivers a smooth treble frequency response that rivals an EST unit.
Driver
Balanced Armature
Driver Configuration
14 Balanced Armature Drivers
Plug
4.4mm (Balanced)
Connector
0.78mm 2-Pin
Impedance
20Ω ± 10%
Sensitivity
106dB @ 1kHz
Frequency Response
5Hz - 35kHz
Cable Length
1.2m
Working Sound Pressure Level
20 - 106dB
Technology
Dual Channel Acoustic Maze Technology
Non-Destructive Direct Drive Topology Technology
Multidimensional Frequency Division Architecture Technology
Box Contents
- AFUL Cantor
- Detachable Cable
- Carrying Case
- Silicone Eartips (S, M, L) * 9
Disclaimer
This review reflects my personal and subjective listening experience with the mentioned audio gear product. I would like to thank Hifigo for organizing this review tour in my country and allowing me to share my thoughts on the product. Please note, this review is not influenced by any form of compensation.
Before proceeding, it is important to mention that most of my impressions of the gear are based on the source and test tracks mentioned, so your mileage may vary.
Sources: Earmen Angel and Cayin RU7
This is my first encounter with an Aful IEM, having previously skipped the P5 and P8. I was very interested in listening to their flagship offering, and I am thoroughly impressed. The Aful Cantor is a set of in-ear monitors (IEMs) that have been attracting attention in the audio community for their well-rounded sound signature and technical performance. I was excited when I was approached to review this unit, as I had previously shown interest in the P8. This review aims to delve into the various aspects of its sound characteristics.
Bass
Before delving into this section, it’s essential to address the proper use of Cantor’s nozzle and tips. Given the nozzle’s length, there is a tendency not to position the tips correctly. For optimal results, it’s advisable to use the stock tips provided with the package. These tips should be fitted so that they cover the entire nozzle and not just the upper portion. Improper insertion can result in a poor seal, which affects the bass response. Initially, I faced this issue but was guided by local audiophile friends to fit the tips correctly, and then evaluate.
Regarding the bass on the Aful Cantor, it is well-executed, emphasizing sub-bass extension rather than mid-bass prominence. The sub-bass offers satisfying depth, extending low to provide a sense of rumble and weight when the track demands it. This gives the IEMs a tactile feel, especially in genres like electronic, hip-hop, and cinematic scores. Mid-bass is punchy and tight, contributing to a sense of speed and control in the lower frequencies. It avoids excessive bloom or bleed into the mids, maintaining a clean and distinct bass profile. This clarity allows for bass guitars and kick drums to present with good texture and detail. For bass-heavy tracks, the Cantor can deliver impact without overpowering other frequencies, making it versatile across various genres. However, bass enthusiasts who prefer an exaggerated response may find the Cantor’s tuning conservative, favoring a natural and balanced presentation over a bass-dominant one.
Mids
The mids on the Aful Cantor are clear and detailed, with a slight forwardness that emphasizes vocals and instruments. This positioning creates a sense of intimacy, particularly with vocal-centric music. Male and female vocals are rendered with good tonal accuracy, providing enough body and warmth for a natural timbre without sounding overly thick. The lower mids are clean, benefiting from bass control, which avoids muddiness or congestion. This clarity extends to the upper mids, where the Cantor maintains detail and presence without harshness. Instruments like acoustic guitars, pianos, and strings have a realistic texture, and complex passages in orchestral music are well-handled. Although the mids are balanced overall, there is a slight upper-mid elevation that can occasionally introduce sharpness in tracks already forward in that range. This sharpness does not become sibilant or fatiguing in most cases but is something to consider for those sensitive to upper-mid frequencies.
Treble
The treble on the Aful Cantor is energetic and detailed without being overly bright. There is enough sparkle and airiness to give cymbals, hi-hats, and other high-frequency instruments a crisp and defined sound. The treble extension is impressive, reaching high enough to create a sense of space and openness in the soundstage. The treble is carefully tuned to avoid harsh peaks that can cause listening fatigue. The Cantor balances detail retrieval with smoothness, allowing for long listening sessions without discomfort. This makes it suitable for genres with intricate high-frequency content, such as jazz or classical music, where treble clarity is essential. Some listeners may find the treble slightly subdued compared to more analytical IEMs, but this restraint helps maintain a balanced overall tonality and avoids a clinical sound signature.
Technicalities
The Aful Cantor excels in technical performance, demonstrating good resolution, imaging, and soundstage.
Resolution: The detail retrieval is superb for its price range, with subtle nuances in the music easily discernible. The Cantor resolves micro-details in well-recorded tracks, making it suitable for critical listening.
Soundstage: The soundstage is wide with a decent sense of space and separation between instruments. While not the widest in its class, the stage has a natural width that enhances the listening experience without sounding artificially stretched.
Imaging: Instrument placement is precise, with accurate positioning within the soundstage, offering a clear sense of directionality.
Dynamics: The dynamic range is solid, with a good contrast between soft and loud passages. The Cantor handles sudden changes in volume and intensity with ease, adding liveliness to the music.
Timbre: A strength of the Cantor is its natural timbre, with slight BA nuances. Instruments sound true, without artificial coloration in the sound.
Conclusion
The Aful Cantor is a well-rounded IEM with a balanced sound signature and impressive technical capabilities. It excels in natural bass, clear mids, and detailed yet smooth treble, combined with strong technical performance in resolution, soundstage, and imaging. While it may not cater to those seeking extreme bass impact or an ultra-analytical signature, it provides a versatile and enjoyable listening experience across various music genres. Overall, the Aful Cantor is a compelling option for audiophiles seeking a detailed and refined sound at a competitive price point, striking a good balance between musicality and technicality. The starry night version is particularly appealing, offering an aesthetic enhancement over the original.
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Fantastic review thanks for sharing 
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thanks a lot for the feedback
I agree , it’s not a tech focused IEM
It’s an overall good package,
It’s 8 across the table
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I mentioned the source and covered them in the video. Already replied in HeadFi
Super review doesn’t have a 5128, only a clone 711. I think you might be mistaken.
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Edit : Super Review uses 711 Clone and not 5128. (I stated wrongly in previous comments)
I am telling you. I like my IEMs to not have a 10Khz dip which is not suitable for my HRTF since that region sounds a bit too relaxed for me. The cantor manages to provide a natural representation by that 10khz dip which no one seems to be complaining about.
I believe what you hear is correct, no issues there. I just wanted to see if there was a 5128 graph because I hadn’t found one. And this is not a 5128. I will post the screenshots of Super*Review’s squig link where he indicates he uses a 711 clone coupler :
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Sorry for the confusion, can you please send me name of few reviewers who use 5128. Glad it got cleared up this soon, this would’ve been misleading. I was under the impression that he uses 5128, since I mentioned I am using his graph in his discord. And no one noticed.
For the review - Yes! The sense of being safe can be noticed for my HRTF. So all the statements I said in the review is 100% of what I feel.
I stated this issue in HiFiGuides too. If you can contribute to this , it would be great too.
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The Hangout (crinacle) and Headphones.com also have the 5128, but neither seem to be very actively using it.
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appreciate the review. ive been interested in it for a while but there isnt a crazy amount of videos about it online
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Thanks for the feedback