URBANFUN YBF-ISS014

DISCLAIMER

I bought the Urbanfun YBF-ISS014 at $29 USD at my own expense from a local second hand shop.


EXECUTIVE SUMMARY

“My Mom Always Said Life Was Like A Box Of Urbanfuns. You Never Know What You’re Gonna Get.” Statement courtesy of Headfier lgcubana and Forrest Gump.

This above statement is a microcosm of the MMCX QC issues and driver doubts that plague the Urbanfun YBF-ISS014 even till today. The Urbanfun YBF-ISS014 sports a V shaped tuning with good transients, nice soundstage and great technicalities for a single DD set, coupled with authentic timbre and good bass texturing and extension. It is a big pity that QC problems overshadow, distract and detract from the otherwise good sound of the Urbanfun YBF-ISS014. The Urbanfun YBF-ISS014 is indeed urbane and fun, and the hype is justfied IF (and this is a big IF) a working legit beryllium driver set is obtained.


SPECIFICATIONS

• Driver Type: Purportedly 10 mm beryllium plated single dynamic driver. Some have unfortunately gotten a “noble metal” driver which has different tuning.
• Frequency Response: 20 Hz – 40 kHz
• Impedance: 32 ohms
• Sensitivity: 107 dB/mW
• Cable type: MMCX
• Available at $60ish USD

DECODING THE URBAN LEGEND: MMCX QC AND IGNOBLE “NOBLE METAL” DRIVER CONTROVERSY?

Forgive me for meandering, but before we go on to the review proper, I would like to tell an urban legend (no pun intended) about the Urbanfun YBF-ISS014’s MMCX QC issues and ignoble “noble metal” driver controversy. Feel free to skip this, but I feel it is only fair to describe this in more detail, so that potential buyers go in with their eyes open. As we know, budget CHIFI is not a paragon for robust QC, but the MMCX QC issues and driver controversy of the Urbanfun YBF-ISS014 takes this to a new and almost laughable level, such that I have to dedicate one whole section for this.

The Urbanfun YBF-ISS014 was originally retailing at $39 USD when it first launched, but after it was hyped to the moon, the sellers are now selling it at $60 – 69 USD. Well willing buyer, willing seller. Supposedly this price gouge was to “guarantee” that the MMCX and driver issues are fixed, but as of the time of this writing, I still see numerous reports on audio forums of faulty MMCX connectors even with recent purchases (which come in a white box).

MMCX problems aside, there is also a possibility of receiving a “noble metal” driver instead of a beryllium driver when purchasing the Urbanfun YBF-ISS014. Some platforms like Taobao do let you select which driver version to buy, but other places like Aliexpress/Amazon do not. Well you can ask the Aliexpress sellers whether they are selling a beryllium version with good MMCX connectors, but all salesmen will tell you what you want to hear and you can be none the wiser. To be fair, maybe the sellers themselves also are none the wiser on what driver type is supplied by their suppliers. So it is really playing Russian roulette to see which driver type comes in the mail from said platforms.

There have been some fellow audio enthusiasts in the audio forums who own both a “noble metal” and beryllium driver Urbanfun YBF-ISS014, and they say the tuning is different (credit to Slater and chickenmoon from Headfi). According to guru Slater (credit to him), who has both driver types, the beryllium version has deeper subbass and more treble extension, so basically he finds it more dynamic. Slater finds the “noble metal” version more balanced, like a shallow V shape with less extended subbass and treble. The “noble metal” driver is apparently an aluminum-magnesium alloy, which isn’t that noble after all if it changes the tuning. I’ve also read quite differing review opinions about this set too. Could that be explained to some extent by the different driver types received by reviewers?

So comes the million dollar question: how does one tell if their Urbanfun YBF-ISS014 is a “noble metal” or beryllium driver? Well credit once again to Slater, who writes this on headfi:

“The only way to tell is to remove the nozzle mesh and shine a light onto the driver inside the shell. There is a very small hole in the center of the metal cover over the driver, and you can see the center dome of the diaphragm.

Using a powerful magnifying glass, you should be able to tell what type the driver is.

If it is highly reflective, like a chrome mirror finish, then it is the beryllium driver. If it is dull greyish/silver metal, and does NOT have a mirror finish, then it is the noble metal version.”

My Urbanfun YBF-ISS014 was bought second hand, features a black box with a monkey logo and has a pink cable, so it is one of the older batches (unlike newer batches that come with a white box +/- grey cable). I’m not as hands on as Slater, so I didn’t dare to force open the nozzle mesh and hence can’t confirm 100% if it is a “noble metal” or beryllium driver. But I think based on the sound description (see below), it seems to tie up with some others that my set is V shaped with good subbass extension and texturing, so it probably is the beryllium version.

In fact, due to the doubt of driver type, and these MMCX problems, I decided to buy my Urbanfun YBF-ISS014 second hand from a local shop, so that I could test the MMCX and the sound before purchase. So regarding the urban legend of the Urbanfun YBF-ISS014 QC issues, I experienced it firsthand: my set had some MMCX issues on the left earpiece, but the seller was flogging it second hand at a relatively cheap $29 USD. There’s an old adage: “you pay peanuts, you get monkeys”. I almost laughed in the shop seeing the black box with a monkey logo laughing back at me. Well after listening to the set, I thought the sound was actually very good, the basshead in me liked the subbass texturing, so at that price, I felt that’s an acceptable risk to stomach, I’ll just leave a cable on the MMCX connector permanently. However, if I bought it at the current full price of $69 USD price and found a wonky MMCX, I would have been pissed for sure.

Other than testing it prior to purchase, you can consider buying the Urbanfun YBF-ISS014 from a platform/local shop with a robust returns policy, eg Amazon, as there’s a chance of getting a lemon. If you are gonna buy it from Aliexpress or somewhere else without a good customer support/returns policy, don’t blame us if you get a lemon or ignoble “noble metal” driver, Caveat emptor!

I know some budget CHIFI companies skimp on QC to save costs, but this is a real case of penny wise, pound foolish. Other than myself, there are multiple reports of MMCX QC problems in the audio forums, that are reported even in newer batches of the Urbanfun YBF-ISS014 which came with a white box. Some had no sound from one side of the IEM on arrival, some had their MMCX breaking after a few cable changes, some had their sets die after a few weeks of use. So much so the Urbanfun YBF-ISS014 is now famous (or rather infamous) for their poor QC. In fact I held off on buying the Urbanfun YBF-ISS014 for months cause of this, and perhaps others will be facing the same dilemma. I do hope Urbanfun can get their act together and do a thorough review of their QC/driver issues and ensure that every set comes with a working MMCX and beryllium driver. The small amount of effort, time and costs put into good QC will in the long run provide better sales and reputation for the company. There’s readily available solutions like finding a different factory/supplier for your MMCX connectors, spending a bit more on higher quality MMCX connectors, or even using a 2 pin connector etc. There is a already a good product lying underneath here, just that it is tarnished with the QC/driver doubt brush.

Anyways, thanks for reading the background urban legend behind the Urbanfun YBF-ISS014, let’s get to the meat of the review now.


ACCESSORIES

In addition to the IEM, it comes with:

1) Silicone tips and foam tips of various sizes.

2) Stock cable -> pretty well braided, minimal microphonics. Mine is pink, and of the older batch; I see newer batches arrive in a grey cable.

3) Semi rigid zipper case.

4) Small metal case for foam tips.




The Urbanfun YBF-ISS014 is quite well accessorized, everything is useable out of the box, no need to mess around with aftermarket tips/cables.


BUILD/COMFORT

The Urbanfun YBF-ISS014 is made of metal, the shape of which is rather reminiscent of the BLON BL-03, but the Urbanfun YBF-ISS014’s fit is much much better due to the longer nozzle compared to the BLON BL-03. It is very comfortable and ergonomic, I can use it for hours with no issues.

No driver flex was detected on my set.

For my set, the left side MMCX housing was a wee bit wonky as stated above, as it had difficulty connecting an MMCX cable until after multiple attempts. I think the housing side was a bit loose, but after some difficulty, I managed to pair a cable on it and I intend to leave it there till kingdom come. Hence, I strongly suggest you stick one MMCX cable on the Urbanfun YBF-ISS014 and DO NOT change the cable unnecessarily (if at all). That’s my general rule for MMCX type IEMs, but it will be respected 100% for sure on the Urbanfun YBF-ISS014. In fact, I have even seen other users using micropore and other tapes to attach the cable onto the MMCX connector permanently.


ISOLATION

Having brought the Urbanfun YBF-ISS014 for a spin on the subway, I find its isolation is slightly below average. Like other vented single DD type sets, it generally loses to multi BA unvented gear in the isolation department. The good thing is the Urbanfun YBF-ISS014 has boosted bass, so this tends to counteract the bass losses in a noisy environment, like during transit, but it still wouldn’t be my first choice for a commuting IEM due to the lack of isolation.


DRIVABILITY

I tested the Urbanfun YBF-ISS014 with a Shanling Q1 DAP, Ziku HD X9 DAP, Samsung Note 5, Tempotec Sonata HD Pro, Sabre HIFI DAC (ESS ES9280C PRO) and a Khadas Tone Board -> Fiio A3 Amp. The Urbanfun YBF-ISS014 is pretty drivable from lower powered sources, with only slight scaling of soundstage and technical performance with amping, so amping is not truly needed.

The Urbanfun YBF-ISS014 lies on the warmer side tuning wise, so I find that pairing it with a warmer source may make things overly muddy. As such, I preferred neutral or more analytical sources with it.


TEST TRACKS

1) Forrest Gump OST – Life Is Like A Box Of Chocolates Urbanfuns

2) Doris Day – Que Sera Sera —> I really liked the Urbanfun YBF-ISS014 at 01:14, it really showcases the timbre of the voices when Doris Day sings the following heavenly lyrics:

“When I was just a little girl,
I asked my mother what will it be?
Will it be “noble”?
Will MMCX by wonky?
Here’s what she said to me:
Que Sera Sera,
Whatever will be will be,
The future’s not ours to see,
Best buy it with a good warranty!
Que Sera Sera”

3) Van Halen – Loss of Quality Control

4) The Beach Boys – Noble Metal Surfer

5) Lenny Kravitz – Mr. Cab Noble Driver


SOUND & TECHNICALITIES

The Urbanfun YBF-ISS014 sports a warm V shaped tuning, with hefty bass and boosted upper mids.

Beryllium drivers are purportedly marketed for giving fast transients and taking well to EQ and indeed, the Urbanfun YBF-ISS014 has good transients and control in the bass especially, and doesn’t distort even with robust EQ.

The Urbanfun YBF-ISS014 has one of the better technical performances for a sub $100 single DD set, with good details and instrument separation, though some multi BA/hybrid type gear may have better technicalities at this price point. Imaging on the Urbanfun YBF-ISS014 is above average but nothing to write home about. Soundstage is wide and tall for the price, though depth of soundstage is about average. Music sounds spacious yet natural with the Urbanfun YBF-ISS014.

Timbre is authentic and excellent for acoustic instruments, with notes being precise, yet with good note weight.


Bass:
The Urbanfun YBF-ISS014 has great subbass extension, with bass just a level shy of basshead jawrattling levels, depending on the track. Subbass seems more elevated than midbass for me, with midbass being punchy with only mild midbass bleed. Forgive me for the pun, but a legit beryllium driver Urbanfun YBF-ISS014 with great subbass can really live up to the name “suburban”, the basshead in me totally approves this. The subbass amounts of course depend on getting a good eartip seal, as bass is usually the first to be lost in a bad seal. But I think those that are bass averse or prefer a neutralish bass may need to look elsewhere. One also can potentially decrease the bass amounts by using a wider bore silicone tip instead of the stock ones.

Despite the copious bass quantities, the beryllium driver has some sort of sorcery that gives the bass good control with excellent texturing, remaining clean with tight transients. The bass doesn’t encroach much into vocals or the mids, and there’s good bass timbre also.


Mids:
Lower mids are more recessed than upper mids on the Urbanfun YBF-ISS014, though the balance between the 2 is quite well done. I did find rarely, that there was a slight glare in the upper mids, for example with brass instruments when the Urbanfun YBF-ISS014 was played at higher volumes (Fletcher Munson curve). But by and large at moderate and low volumes, I thought the upper mids were tame and inoffensive compared to some budget CHIFI offenders. The lower mids reccession loses a bit of points for me though and midlovers might need to look elsewhere, as male vocals sounded a bit distant.

Timbre for acoustic instruments is excellent along the mid frequencies, with instruments sounding quite natural to my ears, other than the aforementioned lower mids recession.


Treble:
Upper treble extension for the Urbanfun YBF-ISS014 is not the best, this is not a treblehead set, but it is not fatiguing and not sibilant and is a safe treble for our treble sensitive brethen. Nevertheless, details and clarity are above average, but won’t beat some brighter multi BA/hybrid sets in the treble clarity, details and treble extension.


COMPARISONS

I decided to compare the Urbanfun YBF-ISS014 with some other hyped single DD sets. Multi BA/hybrid sets have their own pros and cons compared to single DD sets, so it would be comparing apples and oranges as such and they were left out of this comparison.


1) iBasso IT00 ($69 USD)

The iBasso IT00 is more U shaped in tuning, compared to the V shaped Urbanfun YBF-ISS014. Urbanfun YBF-ISS014 has more boosted upper mids, but more depressed lower mids. Urbanfun YBF-ISS014 has better bass texturing and bass rumble and the Urbanfun YBF-ISS014 is more basshead in quantity. iBasso IT00 has better extension at the treble, with more airiness.

Technicalities wise they are close, with both being good for a single DD set, but they both won’t beat some multi BA/hybrid sets in the similar price bracket in technicalities. The Urbanfun YBF-ISS014 edges out the IT00 in timbre and soundstage, whereas the IT00 has slightly better clarity and instrument separation. Imaging is about on par. Tonally, I prefer the IT00 for the less depressed lower mids and airier treble.

Isolation is also better on the IT00, and coupled with the more balanced tuning, I do pick the IT00 for daily use and transit use more often than the Urbanfun YBF-ISS014. But when I need my basshead kick or listen to bass forward music genres, eg EDM, then the Urbanfun YBF-ISS014 is selected, so they are complimentary sets in a way.


2) BLON BL-03 ($25 USD) (but it probably costs closer to $40 – 50 with aftermarket tips/cables in view of the atrocious stock fit)

The BLON BL-03 at higher volumes has shoutier upper mids. Bass quantities are similar, but the bass of the Urbanfun YBF-ISS014 is of better quality and speed and texturing, with the BLON BL-03 having a slower, boomier bass that can’t keep up with fast or complex bass tracks. The Urbanfun YBF-ISS014 also extends better for me in the subbass and has better technicalities in all other departments compared to the BLON BL-03. Timbre between the 2 sets is excellent and about on par.

Fit and accessories are way better on the Urbanfun YBF-ISS014, with the Urbanfun YBF-ISS014 having a longer nozzle that doesn’t necessitate messing around with spacer mods, longer nozzle eartips or aftermarket cables. The BLON BL-03 has slightly worse isolation, though both are poor in the isolation department as a whole.


3) TFZ NO. 3 ($109 USD)

The TFZ No. 3 is more V shaped and is shoutier in the upper mids with louder volumes. The No. 3 is a bona fide basshead IEM and has more bass quantity and extension than the Urbanfun YBF-ISS014, but the No. 3’s bass is pretty bloated and uncontrolled when compared to the Urbanfun YBF-ISS014’s faster and tighter bass. TFZ No.3’s bass isn’t particularly textured or accurate either.

TFZ No. 3 has a much poorer instrument timbre with a more claustrophobic soundstage, with notes sounding quite compressed in the TFZ No. 3. Other areas of technical performance are also better on the Urbanfun YBF-ISS014. TFZ No. 3 perhaps has better isolation, and may also be an option for those wanting jawrattling bass in view of the massive bass amounts, though the bass isn’t the best in quality as discussed above. Other than QC issues, I don’t see (or rather hear) any other areas where the TFZ No. 3 is better than the Urbanfun YBF-ISS014, despite the former’s higher price tag.


4) Final Audio E3000 ($50 USD)

The Urbanfun YBF-ISS014 is more V shaped than the Final Audio E3000, with better extension on both ends. Bass is better textured, speedier and more tight on the Urbanfun YBF-ISS014. Final E3000 is more midbass focused, and I found the subbass a bit lacking personally. Lower mids are less recessed on the Final Audio E3000, with better timbre and a more natural tonality on the Final Audio E3000. Upper mids are smooth and non fatiguing on the Final Audio E3000, in contrast to the Urbanfun YBF-ISS014 which can get a tad hot in the upper mids with louder volumes on rare occasions. Vocals were definitely better balanced on the Final Audio E3000 due to the less recessed lower mids.

The Final Audio E3000 has better soundstage, though at the expense of poorer isolation. Technicalities wise, I thought that instrument separation and imaging were better on the Final Audio E3000 too.

Build wise, other than the possibility of a wonky MMCX on the Urbanfun YBF-ISS014, I still preferred the Urbanfun YBF-ISS014 to the noodle thin non detachable microphonic cable of the Final Audio E3000, which may be a point of failure down the line. I think some wear the Final Audio E3000 over the ears to eliminate the cable noise, though I had a few stares when I tried that in public previously, and the isolation doesn’t cut it for transit use for me, YMMV.

The Final Audio E3000 is quite a power hungry little beast, despite the specs on paper, and amping definitely allows it to scale a lot, in contrast to the Urbanfun YBF-ISS014, which is quite drivable even from humble smartphones.

Overall the 2 sets are pretty different, but i preferred the Final Audio E3000 cause of its tonality, timbre, mids and soundstage compared to the Urbanfun YBF-ISS014. The Final Audio E3000 still manages to stand the test of time and is quite an underrated gem in the sea of new hypetrains, only thing is the crappy non detachable microphonic cable and lack of isolation preclude me from using it more for outdoors and transit.


CONCLUSIONS

So, is this an urbane and fun set? Well, only if you get a legit working beryllium driver Urbanfun YBF-ISS014 with working MMCX connectors. The Urbanfun YBF-ISS014 sports a V shaped tuning with good transients, nice soundstage and great technicalities for a single DD set, coupled with authentic timbre and great bass texturing and extension. It should actually be one of the top sub $100 single DD sets, but……..

“My Mom Always Said Life Was Like A Box Of Urbanfuns. You Never Know What You’re Gonna Get.”

We come back to this statement about the QC issues and driver doubts surrounding the Urbanfun YBF-ISS014, which sadly distract and detract from an otherwise good sound of a legit beryllium driver Urbanfun YBF-ISS014. As such, I cannot universally recommend this set, or can only recommend it with major reservations. I strongly suggest to only buy the Urbanfun YBF-ISS014 from a place with a good returns policy/customer support, eg Amazon, or buy it from a second hand shop in my case, where you can test the MMCX and sound prior to purchase (or no purchase). If you feel lucky and wanna play Russian roulette and get it from Aliexpress and other places without a solid returns policy/warranty, then by all means, but don’t blame us if a wonky MMCX or ignoble “noble metal” driver set comes in the mail! Caveat emptor!

Based on sound alone, I would have rated the Urbanfun YBF-ISS014 very high, even in my top 5 sub $100 single DD sets, it is truly a basshead set that warms my basshead heart (no pun intended). It is with great pity that I have to deduct points from it and knock it down from a highly recommended set to a meh recommendation, due to the QC problems and driver doubts, not to mention the price gouge stunt the mercenary sellers pulled after it received massive hype. I’d be happy to change my review and rating if Urbanfun can show that it can consistently churn out future Urbanfun YBF-ISS014s with a good track record of working MMCX connectors and being 100% legit beryllium drivers. As it is, the QC issues and driver doubt will be an albatross around the Urbanfun YBF-ISS014’s neck for the foreseeable future, and it will be held back from the pantheon of great budget CHIFI over very correctable and preventable issues.

EDIT 2020-10-20: From 4.5/5 to 3.5/5. Not because of sound but because of their continued failure to fix the QC problems AND the fact that you STILL do not know if you are getting the beryllium or a noble metal version. Even after increasing the price from the original 40 usd to the current 70 USD and after months of them telling us it has been fixed over and over it again, simply unacceptable. Shame, because it does sound great.

Edit (2020-05-12):

This is how I fixed the QC problem, attaching the cables first and then micropore tape it. Avoids any strange feeling to your ears (thanks to micropore tape being meant for human skin) and stops the cable from spinning (mmcx spin is annyoing), only downside is that to remove/change the cable you have to remove the tape too.

Disclaimer: I received this for free by DD-Audio store on AliExpress because of their delay in shipping. Thank you very much. I also burned them in for 50 hours before I started listening to them.

Price: 59 usd

Specifications:

Driver unit: 10mm Beryllium Diaphragm Dynamic Driver

Earphone sensitivity: 107dB/mW

Frequency response range: 20-40KHz

Plug Type: 3.5mm Gold Plated Straight Type

Cable length: 1.2m±3cm

Earphone Interface: MMCX

Weight: 35g

Accessories:

S/M/L silicone narrow bore tips

S/M/L Foam tips

4 core cable

Soft case

Hard case

Cable: Nothing special but not really bad. It has ear hooks but no chin slider, the 3,5mm plug has a very nice surface for you to grip on it. Due to the MMCX connector on the ISS014 itself being very fragile (at least it looks fragile) I suggest that you get a better cable and NEVER detach it. Do keep in mind that short mmcx plugs doesn’t fit at all. The plug below fits.

But this below doesn’t fit.

Build: The entire build is made out of stainless steel with a mirror finish (you can use it as a mirror lol), it has a vent hole and mesh filter. It is a small iem but feels very well built since it is out of stainless steel.

The downside to the build is the MMCX connector as mentioned before, it really doesn’t look like it can handle many cable swaps and is unable to fit some MMCX cables too. Also because of the thick nozzle it is difficult to swap tips and some are unusable (for example the Final Audio Type E tips doesn’t fit).

Fit: This fits good and I have no issues with it (unlike the Blon 03 where I have to use an O-ring and still have a hard time with fit). Although since the body is small, people with big ears might have a problem with them but at least for me it definitely is better than the Blon 03 in fit.

Comfort: Personally, I prefer smaller iems that doesn’t cover your entire ear, as those that do, produce a lot more heat and makes it less comfortable in longer sessions. The ISS014 is a small iem and therefore to me it is very comfortable and I can use them for a long listening session without feeling any fatigue from it. They are also good for sleeping as they are very flat and doesn’t protrude from your ears.

Isolation: Below average isolation, due to its small build and the vent holes. Not recommended if you need isolation. (I couldn’t try it outside though, due to covid-19 but tried it with my speakers playing music at home.)

Setup: Fiio M11, ISN S4 (4,4mm), Stock tips

Lows: Very clean bass despite having quite the large quantity. Definitely sub-bass focused, but bass in general is fast and tight while having a large quantity. Also, very good texture too which makes the bass very enjoyable and especially the sub-bass.

Mid-bass: The mid-bass isn’t as boosted as the sub-bass but can still be felt and is punchy and clean. It stays clear from the vocals and this can be heard in for example Metallica – Fight fire with fire (1:11 - 1:23). And in Halestorm – I get off (0:00 – 0:13) you can hear how textured and clean the bass is.

Sub-bass: The sub-bass is the meat of the ISS014, it has a quantity level that should satisfy bassheads AND it stays clean, fast, tight and textured at the same which is exactly how I want it to sound like. In the song Will Sparks – Sick like that (03:08-03:22) you can hear how clean, fast, tight and textured it is. And in Contiez ft. trey G – Trumpsta (Djuro remix) (01:30 – 01:43) you can hear how much it rumbles. Very good extension as it reaches low and rumbles very good.

Mids: very good balancing between male/female vocals, warm and organic and no sharp peaks at all. Details is high despite its warm tuning. Although quality is a bit better on the male vocals than the female.

Female-vocals: As mentioned above the female vocals are a bit worse when compared to the male vocals, that is because the female vocals doesn’t sound as natural as the male vocals does (and that the Blon Bl-03 has a more natural female vocal reproduction which I will get into more details later)

Male-vocals: The male vocals have a warm and organic sound to it and I suspect that the bass has something to do with it, but it is very clean and separated from the bass.

Highs: a very natural and clear treble, no sibilance or sharpness for me. Very high amount of details here and has some air in it to make It sound more natural (although it could have been more because the extension isn’t that good here.) it is a warm iem so the treble should not be a problem for a lot of people.

Soundstage: average soundstage.

Tonality: a warm L-shaped iem that has excellent timbre and overall sounds very natural.

Details: very good details despite being so warm and with its bad treble extension.

Instrument Separation: very good separation and probably the clean bass to thank for that.

Songs that highlight the IEM: , , , , ,

Good genres: Bass focused songs, Rock, Metal, Trance,

Bad genres: Orchestral, OSTs, Acoustic songs


Comparisons:

LZ A6 (Pink Filter): Treble quantity and quality is way above the ISS014 (also extends much further but also have a bit too much air for it to sound completely natural).

Mids has a bit more quantity in the A6. A6 has more details in the mids but the ISS014 sounds more natural especially the male vocals but the female vocals are also more natural although not as big a difference as the male vocals.

Mid-bass is tighter, faster and cleaner on the A6 (although much of it is due to the treble difference and that the bass quantity on the A6 is lower than the ISS014). But the ISS014 has more texture in the mid-bass than the A6.

Sub-bass has more quantity in the ISS014 and more texture than the A6, but the A6 has a cleaner, tighter and faster sub-bass.

Technicalities such as soundstage, instrument separation and details are much more impressive on the A6, but timbre is better on the ISS014 and does sound more natural overall.

The A6 suits treble-heads and/or people that want as clean sound as possibly while also having an impressive bass. The ISS014 is for the people that love a high quantity sub-bass while having excellent quality like staying clean, tight, fast and textured.

Blon Bl-03(mesh mod): More treble quantity but quality is equal on the 03. Mids are leaning more towards female vocals quantity and quality (they sound more natural) on the 03 while male vocals are better on ISS014 as it sounds more natural with its warmness (also better balancing between male/female vocals on the ISS014).

Mid-bass is very similar, except it when there is a lot of things going on there, it gets chaotic on the 03 (that’s the instrument separation though…). Sub-bass however extends lower, rumbles more and has quite a bit more texture (tightness and speed are similar though).

Soundstage, Details and instrument separation is better on the ISS014 while timbre is on the same level (bass is more natural on the ISS014 and male vocals while female vocals and treble is more natural on the 03).

The big question though, is the ISS014 worth upgrading from the 03? From the non-modified 03 I would definitely say YES, but with the mesh mod?

The differences gets smaller and more up to your personal taste, if you like a brighter set then the 03 would be better but if you want a better bass and male vocals while also being warmer (lower treble quantity and easier to use for longer listening sessions) then the ISS014 is better ( also don’t have to deal with modifying or adding O-rings to make it fit) . Fit is much better on the ISS014 for me though, don’t have to deal with O-rings or have to use wide-bore tips like on the 03.

Shozy Form 1.1: Treble has more quantity (especially at 8khz) but is quality is quite a bit lower since it doesn’t sound nearly as natural as it does on the ISS014. (it does extend a bit further though.)

Mids are as well balanced between male/female vocals as they are on the ISS014, but it is recessed when compared to the ISS014. Quality is better on the ISS014, since it is more natural.

Mid-bass quantity is lower on the 1.1 but is a bit faster, tightness is about the same, quality is better on the ISS014 since the 1.1 doesn’t have the same punch.

Sub-bass is the most similar part of these 2, 1.1 has lower quantity and doesn’t extend as low but is a bit tighter and faster, Texture is better on the ISS014.

Soundstage, instrument separation, details and timbre are better on the ISS014 and overall sounds much more natural.

The 1.1 is better if you want a brighter sound and less bass quantity. But the ISS014 kind of beats the 1.1 senseless in everything else (sound wise, the fit and isolation is better on the 1.1.)

Final Audio E5000: The ISS014 has more treble quantity and quality (the bass affects the overall sound on the E5000 a lot). Mids are similar but the E5000 has a thicker lower mids (due to the bass again) but the ISS014 has a better female/male vocal balancing.

The bass is completely different, the E5000 brute forces with quantity, extension and rumbling. Much slower and looser bass on the E5000 and doesn’t have nearly the same texture as the ISS014. This does make the E5000 a less versatile iem than the ISS014 because the bass does make the entire range feel very muddy. But on the songs that the E5000 plays well, it REALLY plays well (one example being Metallica – Nothing else matters), it is kind of a specialist iem.

The soundstage, details and instrument separation are better on the ISS014 due to it having more treble quantity and also a much more controlled bass that doesn’t muddy the entire range. Timbre is similar in how natural they sound but again the bass is the Achilles heel of the E5000, it sounds too muddy and therefore not as natural as the super control in the ISS014.

The E5000 suits specific songs better (examples being Metallica – One, nothing else matters, Sad but true and Enter sandman), otherwise the ISS014 is a better choice in versatility, sound quality and price.




Conclusion: In conclusion the ISS014 is a really good iem and it performs at a very high level, with excellent control and texture in the bass and its relaxed treble that makes it possible to use for a long listening session. Sound wise it is a 5/5 but the Biggest issue with it has nothing to do with its sound, but the QC problems that seems to have haunted it for many months now (related to the MMCX connector). If you are getting the ISS014 you have to be aware that you are gambling on getting a good set without any problems, but if you win, you win BIG. Thanks for reading.

Cable source: https://www.head-fi.org/threads/resistance-of-cables-pics-comments-and-links.907998/

Disclaimer: Urbanfun has graciously provided us with this sample unit in exchange for an honest review. The views discussed below are a reflection of Project A3's thoughts surrounding the product. The sample has been run-in for at least 50 hours prior to reviewing in order to achieve an accurate representation of the product.




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Introduction:
Upon first impressions, the Urban Fun ISS014 shares “fundamental design cues” with the Blon BL01, a budget phenome that has left audiophiles panging for future releases. If they were both placed side by side, both iterations share the exact shame shell-type. And it is oftentimes, easy to mistake one for the other. Apart from the difference in termination (2-pin vs MMCX), both of them share the same heavily polished, chrome shells.

Nevertheless, what it sounds like is what truly matters; Sound is king, not aesthetics. And both earphones start to walk their own path, as the ISS014 houses a “beryllium dynamic driver”, while the Blon BL03 boasts a “diamond-like carbon driver”.

Priced at a $59 USD, a significant margin as compared to the Blon BL03’s measly price of $29, the ISS014 is separating itself from the competition with the large price jump.

Will the Urban Fun ISS014 be another revolutionary earphone in the Chi-fi market? Available at Aliexpress.

Specification:

• DRIVER UNIT: 10 MM BERYLLIUM DIAPHRAGM DYNAMIC DRIVER
• SENSITIVITY: 20-40000HZ
• HEADPHONE PLUG: 3.5MM GOLDEN TYPE
• WEIGHT: 35 GRAMS

Gear Used & Tracklist:
Sony NW-A105|Aune X1S |Periodic Audio Nickel (Ni) |Venture Electronics Odyssey |Google Pixel 2XL |



Unboxing:
The Urban Fun ISS014 comes in a plain, black box. Upon removing the lid, the contents displayed are as follow; a generic, round IEM case, a tin-case with foam tips inside, several silicone ear-tips and the earphones themselves.

While the package might sound sparse, it is to be expected, given the reasonable price-tag. Nothing is missing, and the usual suspects are provided as per usual



Scalability:
The Urbanfun ISS014 is remarkably easy to drive, and amplification is unnecessary. It is incredibly sensitive, and pairs well with most sources without any distinct or large variations in sound quality.

On the Venture Electronics Odyssey, the Urban Fun ISS014 displayed little to no hiss, and it reached my ideal listening volume at approximately 40% (of the max) on my Google Pixel 2XL.

On my the Aune X1s, the ideal listening volume was reached by turning the volume knob upwards of about a millimetre; as you can tell, the Urban Fun ISS014 was designed for low-power output sources.

Changes are minute, and I could only see a change in resolution with the AUNE X1s, no thanks to its superior DAC/OPamp and grounding.



Fit:
Don’t be fooled by the metallic shells; they may look heavy, but they actually wear really light on the ears. Weighing at a measly 85 grams, the ISS014 sits snugly in my inner ear canal, with little to no discomfort (as I sit here, writing this review). The stem is of adequate length, resulting in a tight fit that doesn’t displace easily from my usual “head-shake test”. There are no sharp or coarse protrusions; the shells are immaculately finished and feel much more premium when compared to its attractive price-tag.

The cables are braided but twisted, resulting in a cable reminiscent of the Campfire Audio Litz cables equipped on their newer offerings, such as the IO. The twisting results in little to no microphonics, and it is supple enough so as to not retain kinks or unwanted bends that make it hard to stow away in the provided case.

I’m usually seated right in front of my fan, and the Urban Fun ISS014 barely picks up any wind-noise. The miniscule vent is played beside the spout of the earphone, and it isolates really well, even in noisier conditions.

Overall, I am duly impressed by both the fit and finish of the ISS014.








The Urbanfun's bass-response is lively, and it digs deep in the mid-bass regions. Unfortunately, that enthusiasm does not carry over into the sub-bass; it doesn't reverberate as expected when listening to trap-heavy beats. A v-shaped signature is tailored to complement music with heavily synthesized production standards. The Urbanfun's laidback response clearly favors harmony (on paper, at least) amongst all the core frequencies. The beryllium, dynamic driver is clearly being put to good work.



In admittance, those criticisms stated above were minor nitpicks; I am enamored by the mid-range response of this tiny but mighty earphone. It ticks all the right boxes; it has an accurate timbre, it is neither peaky nor sharp and the interplay between the upper and lower mids is perfectly balanced to my ears. However, vocals might sounds slightly further away; after all, it is still a v-shaped signature.




I found it quite difficult to critique the highs here. My only gripe here is the lack of bite; it doesn't need to be completely smooth. Some forwardness and energy is needed here for it to sound spectacular. It's so close, but it isn't quite there yet.




Like all other earphones in the sub-$100 market, it doesn't do a bad job at recreating a cohesive soundscape. But, it isn't a standout feature for sure. It hits all the right markers, but it fails to surpass them.




The Urbanears are no slouch when it comes to positional cues. The placement of each vocal or instrumental cue is easily differentiated with little effort. However, don't expect "balanced armature" like separation; it lacks that "faux", multi-driver split characteristic. What we have here, is a coherent iem that manages crowded tracks decently well (this is no top-of-the-line, flagship).




To surmise this section, the mid-range has a tonality that pairs well with many genres of music, from Americana (with that luscious twang of an acoustic guitar) to New-wave (think New Order and waterline synths). However, it is a jack of all trades that aims to satisfy most tastes. It excels in everything, but doesn't specialize in anything. Take of that what you will.



Comparison Chart
How we compare: We chose other similarly priced earphones or similar offerings from the same brand that Project A3 has reviewed in the past, to ensure that we remain as impartial as possible in our comparisons.




Conclusion:
The Urbanfun's, as its namesake suggests, is boatloads of fun to listen to with a multitude of genres, both old and modern. By sound-merit alone, the ISS014 could stand vis-a-vis, against its pricier counterparts. I foresee myself placing the Urbanfun ISS014 in my current circulation of daily drivers.

Be sure to follow Project A3 on Facebook for more reviews*.





*All ratings are accurate as of date of publication. Changes in price, newer models may affect Project A3's views on the performance and value of the reviewed product.

URBANFUN YBF ISS-014 REVIEW

SOUND: 7.5/10
CONSTRUCTION&DESIGN: 8/10
PACKAGING&ACCESSORIES: 8/10
VALUE: 8/10

Click to expand...

URBANFUN are among the few talented Chinese earphone companies that stood apart from the debut Chi-Fi phenomenon 7 years ago. I remember being extremely impressed by the refined tuning of their now legendary Hybrid earphones call Urbanfun Hybrid. Using one dynamic and one balanced armature drivers, these were surprisingly neutral-sounding iem with high clarity and delicate treble, which was a real bargain at 20$ and still is, even if I think they are now unfortunately discontinued. The fact is that this type of mature tuning was (and still is) exceptional in the sub-100$ price range which was invaded (and still is) by V shape or overly bright and unbalanced earphones. Strangely, after the high popularity of this bestseller, Urbanfun didn’t make any other Hybrid earphones and choose to create their own patented Beryllium drivers. These drivers stay mysterious and were used in the MarkII budget model as well as the ISS014 flagship model that I will review today.


Okay, I don’t know who choose the model name for these but there you go, they are called URBANFUN YBF-ISS014, as if they choose a patent number for naming their flagship earphones. The ISS014 use a 10mm Beryllium dynamic driver and have an all-metal housing that is very similar to BLON BL-3 and makes people overly compare these two though they have a very different sound and aren’t from the same price range.


Priced 59.00$, the ISS014 is a very affordable flagship, but don’t expect a neutral sound with those as Urbanfun themself describe their iem as U shape in sound signature. Well, I read this after writing this review so it confirms my judgment.


Now let’s see if this ”U shape” sound is well balanced and worth the asking price. As well, let’s see if it can stand apart in Dynamic drivers IEM world as the Hybrid was standing apart in Hybrid world.


You can buy these earphones directly from UrbanFun official store HERE.


PACKAGING&ACCESSORIES






Unboxing is about what we can expect for a ”flagship” in this price-range. It comes in a sober black box with a creative Urbanfun logo on it. Inside the earphones is well presented as well as having nice amount of accessories, but this box look like to be for a different iem which make it a little unserious. We have a metal box with 3 pairs of memory foams ear tips, 3 pairs of silicone eartips, an official Urbanfun carrying case, a kinda decent 4 cores spc copper cable and the earphones. For the price, it’s more than enough.

CONSTRUCTION









As we said, the devil is hidden in detail, and the construction shows it with the rather underwhelming craftmanship of the ISS014 housing. If you look fast, the thick and quite heavy glossy metal housing looks well built and quite sturdy, it could be if it wasn’t the mmcx female connector that has a rough look and feels badly glued inside, with some dangerous space around it that can lead to water damage or oxidation. I read multiple complaints about these connectors, being too loose and I can confirm I don’t expect a long lifetime if I swap cable often with them. Nozzle mesh too has a cheap look to it but it’s really the connector that worries me. Apart from this, the 2 metal parts of the body are well made and very beautiful, they are different than BLON, having a more triangular shape, less bulbous back and notably thicker nozzle.





CABLE look esthetically appealing, I like the mix of copper and silver-plated copper cores, not so much the ear hook but hes enough flexible to don’t create serious discomfort. What I don’t like is that it feel it darken the sound a little, so I suggest you to pay 10$ to choose upgraded cable with the ISS014 which is a 8cores SPC that look more durable and of higher quality.


In term of fitting comfort, the nozzle isn’t very long so the body tend to push against your ears if you don’t use very long ear tips, as well, as the body is slippy and flat at the back, I find it hard to do a proper placement in my ears, like pushing it precisely. This annoys me due to the fact with wrong eartips the ISS014 was popping out of my ears. Anyway, once I use KZ Starline ear tips and find the right deep fit, they stay there and the flat back of the housing is a plus if you wear a toque or wanna sleep with them.


DRIVEABILITY





At 32ohm of impedance and 107db of sensitivity, the ISS014 are quite easy to drive. They benefit from very clear sounding audio source like the Xduoo X20 DAP, which is cold, neutral and analytical. I do not use a portable amp with those, but this will not hurt them and when I do, soundstage does expend a little. I do not suggest warm sounding DAP or amp with the already warm sounding ISS014.


ISOLATION


Strangely, they do not block as much outside noise as I would think, this is perhaps due to the venting hole at its side. Isolation do improve with memory foam ear tips. Noise leakage is present and above average due to the 2 venting hole that is surely very near the dynamic driver.

SOUND




The ISS014 has a warm gently U shape sound signature, with liquid timbre, recessed lower mids, natural vocal, and soft treble. Telling this way, you might think they will sound like a lot of other earphones on the market, but it isn’t the case, because of their rather good tonal balance and inoffensive well-rounded sound free of any serious sibilance. Sure, it’s relaxed in the attack, even if the weighty slam is there and the timbre has good meat, this isn’t bright or snappy sounding earphones, here its the whole cohesion of fluid musicality that charm the ears.


SOUNDSTAGE is one of the highlights of the ISS014, especially in term of wideness, which extends from both way of your head in a panoramic way, tallness is quite good too, but deepness is lacking.


IMAGING is about average and what you can expect from a single dynamic driver in this price range, layering has enough transparency to make discernable other instrument but placement is a little hollow and lacks precision.


TONALITY is warm, smooth and fluid in balance without being too boosted in any region.


TIMBRE is liquid, smooth, minimally textured with airy thickness.


BASS of the ISS014 is very particular, because though it has good slam, it’s beautifully muffled, yes beautifully. This is due to the emphasis on sub-bass that warms the mid-bass punch which is already tamed in impact, as well, this is perhaps due to rather slow transient response. The extension isn’t flat and accurate, and separation is hollow. The bass does caress lower mids which are already recessed, but this adds body to vocal, as well as a liquid lushness. When listening DDIAMOND from intense math-rock band BATTLES, the lack of punch and separation with the bass is evident, it’s even hard to follow kick drum which is very forward with most IEM, as well, sub synth bass lack roundness and mix too much with rest of instrument including the voice, the only thing that positively surprised me with how ISS014 deal with this tracks is how non-agressive it becomes, but this means it sounds dull too, so I really don’t suggest these IEM for fast rock or anything that need fast punchy bass. For slower music like cello sonata, the romantic ISS014 shows a high level of organic musicality, with full-bodied polished timbre, moving good air. For acoustic bass, it’s hit or miss depending on how low the line will extend.


MIDS could have been perfect if we have a little more of them fully covered because while clear, smooth and natural, they feel slightly recessed and too warm in definition, making sometimes word articulation of singer hard understand or breathy. Anyway, while not the clearest, vocal do sound very musical and natural in their unique warm way. An instrument like Piano sound not so good in tonal balance, as mid-range, does lack attack, weight and definition while higher range note are more forwarded and lively. The lower mids do get veil by the bass, thickening the sound but stoling lot of mids information up to about 1.5khz where the real joy begins. This affects especially imaging, not the musical cohesion which gain in addictive smoothness. The woodwind instrument will sound nice with this type of treatment, smooth and full of thick air, but anything that needs some edge to attack will sound less accurate. Mid-range is near texture less, so it’s free of any sibilance. As well, female vocal sounds quite wide and enveloping, taking a front seat when their not too many instruments in a busy track.


TREBLE is delicate and gently forwarded, it’s rather smooth and not edgy apart from upper treble boost that adds sparkle and decay to highs. To my ears, the highs are a little thin and metallic, apart from this upper treble that extract a good amount of micro details, I find it quite balanced and enjoyable. It’s not grainy or overly bright, again slightly liquid in timbre but it’s the most vivid part of sound spectrum and adds some most needed energy. Overall clarity is quite good even if we aren’t in the analytical territory or sharp resolution. The Urbanfun offers an easy going musicality with good versatility and decent technicalities.

COMPARISONS




VS BLON BL03


So, did the ISS014 is new BLON killer? It’s not a really interesting question because here we talk about completely different sounding iem with one that has notably better technicalities: the BLON. At half the price, the BLON still is the unbeatable sub-50$ single dynamic driver and no it’s not inferior, the 60$ Urbanfun make a pale figure, as well as a pale sound, compared to more articulate, resolve and impactful BLON.
Simply put, when I go from ISS014 to BLON it’s like taking of a blanket taming the sound dynamic and resolution-definition. SOUNDSTAGE is bigger, more holographic, way deeper and airier with the BLON, making the ISS014 sounding like a wide tapestry at some distance from you. BASS is more thumpy, has better extension and articulation, rumble is meatier and mid-bass more textured and impactful, while ISS014 is smoother in impact and lack definition in sub and kick separation, as well, it’s less bassy but in an overly warm way. MIDS are clearer, slightly brighter with the BLON, separation is sharper and whole accuracy better than more laid back and diffuse mids of ISS014. An instrument like violin sound tonally right with good grip for the BLON while the ISS014 have a tamed edge to it and lacks texture, making it sound too liquid. TREBLE is more energic and snappy with the BLON, percussions having fuller resolution while the ISS014 highs are less balanced and thinner with extra brilliance and sparkle that can make cymbals splashy or woodblock metallic sounding.
In no way the ISS014 are better, if I force myself I would say female vocal are perhap less bright and more natural but not as clear and textured as BLON too, technically it’s seriously inferior and the lower resolution, poorer imaging, tamed attack with exception of upper treble make the comparison between those 2 very dangerous for the Urbanfun reputation, so let’s just say these 2 sound very different.


VS KBEAR Diamond (80$)


The Diamond uses a DLC driver with a notable faster transient response, but it’s less balanced at the ISS014. SOUNDSTAGE is again deeper and airier with blacker background, IMAGING is more precise and instruments have more space between them. BASS of both isn’t perfect, but the texture, tonality is better and mid-bass faster in attack but thinner in body, ISS014 have more (slow) slam but separation isn’t as good than DIAMOND. MIDS are brighter with the Diamond, less natural in tonality and timbre, thinner but more transparent and texture. As well, the Diamond is notably more sibilant making vocal way more pleasant with the ISS014. TREBLE is leaner with the ISS014, more balanced with the mids as if it’s natural continuation, with the Diamond, we have more micro details but less macro-resolution, in the sens some instrument sound overly thin or dry compared to lush Urbanfun.
All in all, the technicalities, attack, and imaging will go to the Diamond while the naturalness, timbre, and musicality go to the ISS014.

CONCLUSION




URBANFUN has made a real departure in sound tuning since their acclaimed Hybrid model, and while I think this more fun and relaxed sound signature will perhaps please a wider crowd, I don’t think it’s an interesting evolution for audiophile searching good technicalities in dynamic range and nuanced well-balanced sound.

Still, they aren’t bad at all mean, the musicality is there, and it offers a full sound that is both smooth and bassy and most of all free of sibilance. U shape is the sound as stated, warm it is too, cohesive in tonality even if not perfectly balanced. It’s fun and laid back urban fun, not for critical listening, just to enjoy with any recording quality you have because it does not show the inner weakness of badly mastered music. It’s a versatile IEM, and an inoffensive one too, easy to love and hard to hate (if you aren’t an old grumpy snobbish audiophile like me).

It’s Urban lifestyle tuned, and it’s Fun without being risky. UrbanFun tune for youngsters audio enthusiasts and the ISS014 is the perfect budget flagship IEM for bassy easy listening audio sessions for music that do not need a high level of accuracy and clarity.



( For more honest reviews, go to my official website HERE )

FIrst of.

These are incredible. At the price point of $60USD, it is incomprehensible how these can sound so good.

Testing Equipment used:
- Iphone SE + MBP
- JDS Atom

Music Genres:
- Pop
- Hip Hop
- R&B
- Rap

Build Quality:
- Decent, it could probably take a drop or too
- Cable is also quite good

Fit:
- No issues, the nozzle is quite large so might make it difficult to put some tips on (especially silicone)

Bass:
- Very very very very well done. The extension is perfect. Great quantity of slam and yet is still fast. There is good seperation between sub and mid bass also.

Mids:
- Refined, slightly recessed especially the low mids. The hgih mids are crisp. Vocals sound great. No mixing of bass and mids.

Highs:
- Decent, not the best but can't fault anything in particular. Depending on volume can be a tad harsh at times.

Soundstage:
- Wow, this is what i didn't expect, the space is very impressive. These don't sound intimate like most IEMs there is a sense of space which is hard to describe. Very impressed.

Seperation:
- For $60 the fact that it's possible to delineate a tamborine from a bass drum bang from a snar is insane.

I cannot recommend these enough if you enjoy a V/U shaped sound signature (these are far from neutral).

They offer a very good bang:buck ratio. But there are better more coherent sets available (substantially more expensive however)

source for the review - Sabaj DA3 (from the balanced out)

Albums and songs

Jed Palmer - Upgrade (2018)
Jon Hopkins - Insides (2009)
Kryptic Minds & Leon Switch - Black Out Vol. 1&2 (Defcom Records) 2005 [FLAC]
Kryptic Minds And Leon Switch - Lost All Faith (Defcom DCOM03CD) (2007)
Macc & dgoHn - Some crap Saaink - 2010 (CD - FLAC - Lossless)
Plug_-_Drum_'N'_Bass_For_Papa-2CD-1997-FLAC
Dominik Eulberg - Heimische Gefilde (2007)
Alaska & Paradox - Isolationist LP [2009] [FLAC]
Asura - Life² (Remastered 2015)
Beck - Sea Change (MOFI) (2009) [FLAC]
Buena Vista Social Club - Buena Vista Social Club (24-96)
Chesky Records - Women of Song (1997) [flac-cue-log]
DAVID MANLEY RECORDINGS
Dire Straits - Brothers In Arms - 1985 [24-48]
Eric Clapton - Unplugged (2013, Deluxe, 2 CD) [flac]
Head-Fi And HDtracks - 2010 - Open Your Ears [FLAC]
Macy Gray - Stripped (2016) [FLAC 24]
Michael Jackson - Thriller - 1982, DSF 128 (tracks), TAV
Michael Jackson - Bad_DSD_Stig
Hans Zimmer - Inception (Reprise, 524667-1, US, 24-96)
Hans Zimmer - Interstellar [Deluxe] (2014) [24bit]
Hans Zimmer - The Dark Knight Rises (Deluxe Edition ) (2012) [FLAC]
Harry Gregson-Williams - Total Recall (2012) [flac]
Ludwig Göransson - Venom (2018) FLAC

specs
10mm beryllium coated driver
Resistance: 32Ω
Sensitivity: 107±3dB
stainless steel body with mirror finish
mmcx connectors


How can you not love it, it is like chocolate with peanut butter, one piece is not enough, you need more and more. It is easy to become sub bass addict. If done right nothing can wow you more in a song or movie.
There are many earphones with large sub bass, here we have something different. Was skeptical for this earphone, i saw the graph on their store and it was kind of weird, so decided to skip them.
Couple of days later Bui Hai Anh wrote some impressions for them, he said - "around 5db more sub bass than Blon BL03". I was like hm, BL03 is already boosted there. 5db more?
When i see - more and sub bass, that is getting my attention like a kid in a candy store.
I wrote him a PM to ask how is the bass control because often if you have large emphasis in the bass region the driver can be under damped, he told me that the bass has good control and the overall sound is silky smooth.
That was enough for me, purchased them on black Friday sale for 39$.

Build, fit and comfort
The build is kind of a mixed bag, i have no problems with my pair, but some other people have problems with one of the mmcx connectors on the earphone, refusing to clamp on the cable connector, so keep that in mind.
The earphone body is build great, it is a steel body, looks very sturdy and beautiful.
The nozzle is large, some normal bore tips are hard to put in place, it has a fat nozzle, wide bore tips fit fine and are recommended from me for best results in the sound also. The stock tips are fine but they are hard to put on the nozzle, they are a bit stiff, i tried modded KZ tips and the sound was with a little bit less impact, but they are slipping out of my ears so i had to change them to normal bore white silicone tips (i am not sure from what earphone i have them) . The comfort is very good, they are very small and nicely shaped to sit in your ears. The stock cable is fine, it looks nice and it is not stiff, i use them balanced with aftermarket cable though.





Isolation
A bit better than the BL03, they go a bit deeper into the ear, but still not strong.

Overall tonality. (Later findings - see the Update section below)
U shaped.
The bass was fast out of the box with similar quantity to the Blon BL03. I was like - "hm, Bui said 5 db more sub bass, i don't hear it, where is it.
I continued to listen and after a couple of hours they began to change - the sub bass was hitting like a truck full of bricks.
Now, i have sub bass heavy earphones, Moondop Kanas, but UF is taking the same approach but a bit more extreme.

Bass
That is a basshead earphone, no other way around it. It is with sub bass focus, have some mid bass boost but it is under the sub bass by good amount, the lower you get in FR, it gives you more quantity. The sub bass is very large, you can hear rumble from strings on acoustic guitar if there is any, it will rumble vicious when the song calls for it.
They have very unusual dark, heavy bombastic sub bass tone. I don't know how to explain it.
Sub bass is large but it is not sloppy, despite the emphasis it has excellent control, stopping on time to stay clean.
Bass texture is amazing for that price, the overall bass quality is great, there is just a lot of sub bass.

Mids
The midrange is warm and creamy, it has lush tone to it, very smooth and inoffensive. It is getting some warmth from the bass but the overall full and lush tone is coming from a dip in the upper mids. It has similar tone to Audeze full size planars, LCD2 and 3, full and smooth but is missing information after 1.5 - 2khz somewhere.
Quality of the mids is high, despite the warmth they have high amount of details, lot of texture to the voices and instruments. For me the midrange is very beautiful but it has a dark tone to it, will like a bit more upper mids.

Treble
EDIT - new findings about the treble response with wide bore tips.
with wide bore tips (wider than the stock) the treble and upper mids are a lot more so the overall tonality is changed, they don't have that dark and heavy tonality from the narrow bore tips, so keep that in mind
i had to edit the review after i found and tried wide bore tips that are not slipping out of my ears like the modded KZ tips i tried at the beginning

The treble is with similar quantity to the mid and lower midrange area. The dip in the upper mids is continuing into the lower treble, after that it recovers at around 10khz, that is the most noticeable part of the treble but in overall quantity is not a lot at all, for many people will not be enough. The extension is average, they go to around 12khz.
Treble quality is high for that price, it is very quick treble, fine and airy, delicate with good amount of details and air, it is just not a lot of it.


Soundstage and imaging.
The soundstage is wide and very tall, kind of unusual for me, the dept is not very good, the size is large but on the sides. Because it is so tall you can hear sounds coming under and above your head, i never heard such a soundstage in a earphone. The imaging because of the very dark background is excellent, it is easy to hear the positioning of the instruments and the driver is quick so there is no smearing with more complex tracks.

Performance with movies
That is the closest feeling you can get to 2.1 speaker system from a earphone. The sub bass impact is rapid and violent, it is quite an experience to watch something like - Godzilla king of the monsters with that earphone.

Comparisons

With Blon BL03


Bass
UF has more sub bass, similar mid bass, UF has faster attack and decay, the texture is a bit better on UF

Mids
BL03 has more upper mids, the mids are more open sounding, more natural and neutral than the UF
UF is warmer, lusher and it has more details despite the better tonality in the BL03

Treble
BL03 has more treble in 8khz range, UF at around 10khz, Blon has overall more treble (keep in mind that i have the "cleaner" version), UF treble is more gentle but airy and clean at the same time, it is just under the Blon in quantity

Soundstage and imaging
Blon has more dept, similar width but UF is taller
the imaging is better on UF because of the blacker background

Overall the UF is more resolving, more detailed but darker and heavier in the sub bass.


with Moondrop Kanas

Bass
UF has a little bit more sub bass, a bit less mid bass, UF has better control, the bass is faster, the texture is similar, Kanas is slower but the bass is well textured, UF has better dynamics

Mids
Midrange sound very similar between the two, UF is a bit darker in the mids, a bit less midrange energy overall, Kanas have more present mids in the 1-2khz area but it dips similar to the UF in the upper mids
UF has a bit more detail in the mids, it is very unusual to have dark mids that have so much detail

Treble
Kanas have more air, it has a peak in the upper treble - around 14khz, in UF is lower, around 10-11khz, so the overall treble quantity is close but the tone is a bit different, treble quality is on par between the two, it is nice and clean treble but not a lot of it

Soundstage and imaging
UF has larger stage and better imaging, KP is nothing special

Overall UF is a bit darker with better controlled but more sub bass, better details in the mids, larger soundstage with better positioning.

with SEMKARCH CNT1

Bass
UF has more sub bass, same mid bass, the control is very good on both, CNT1 is also tight and very well controlled
bass texture is better on UF

Mids
tone of the mids is similar but the UF is a bit warmer and darker, a bit more detailed but dark

Treble
CNT1 has more treble but is grainy compared to UF, UF is smooth, clean without any roughness or grain, it sound more refined in the treble but it is less in quantity

Soundstage and imaging
UF has wider and taller stage, the dept is on par, imaging is a bit better on UF

Overall UF is more detailed across the board but darker and with more sub bass.

Conclusion
The sound is unique and i love it, it is the best earphone that i have for Drum and bass and movies
Unfortunately mmcx connectors have some issues, so getting them is a bit risky, i got lucky with my two pairs but others are not that lucky so be aware of that.

If you like more transparent uncolored sound they are not for you.
If you get fatigue from a lot of low end they are not for you.
If you are looking for strong isolation from the outside noise they are not for you.
If you like bright signature with forward upper mids they are not for you.

If you like dark and smooth signature with lots of bottom end they are for you.
If you are a basshead that loves large amounts of sub bass with good quality they are for you.
If you watch movies all the time on your tablet and want immersive experience with earphones they are for you.
If you listen to mostly electronic types of music they are for you.


Have a good one