July 06, 2016

This article was written by Paulo Diaz and first appeared in Golden Ear here.

PROS:Extreme detail from bass to treble,superb bass quality,instrument separation,true HI-RES sound,build quality

CONS:Non removable cable


Technical Specifications

  • Type: Dynamic (10mm)*1,Balanced Armature*2

  • Sound pressure level: 102+/-2dB

  • Impedance: 8 Ω

  • Frequency Response: 4 Hz-40KHz

  • Noise Attenuation: 26dB

  • Plug: 3.5mm Gold-Plated

  • Cable Length: 1.20M

  • Weight: 21.8G Package

Burn-in: 150 hours. No noticeable change in the BA's; dynamic driver (bass) has slightly improved.

Prefered spacer/tips: red ring + 3rd party dual-flange with wide bore tips

Source: FiiO X3

So DN-2000J... Dunu's top of the line. So many things to say about them, the first thing that comes to mind is: extreme detail. The levels of detail here are ridiculous. Take Titan 1 and multiply by 1.5 and you got DN-2000J. Sounds fair? Well, it's not that simple and objective, let's elaborate.


The DN-2000J feature a very unique 3-way design. These universal fit, in-ear monitors, create accurate musical reproduction via one 10mm titanium-treated, liquid crystal polymer dynamic and two Premium balanced armature drivers. The sonic sum of this distinctive approach is something that applies easily across a wide band of musical genres and playback. Well suited for everything from rock to classical to dance, the 2000J has a little bit of acoustic bliss for everyone.

Box & Acessories

The 2000Js come equipped with an exhaustive array of accessories. 10 pairs of silicon eartips, 3 pairs of Comply foams, a pair of ear-hooks, a 3.5mm Female to 6.5mm Male Adaptor, a 3.5mm Female adaptor, 8 pairs of adjustable rings, a pair of bass rings and an aluminium box with gold accents.

 Fit & Isolation

Due to to the smaller housing, fit has significantly improved since the DN-1000. Noise isolation is not as good as DN-1000 but still very acceptable. With dual flange tips, especially if you have large ears, isolation can improve considerably and at relatively normal volumes, outside noise won't be an issue.

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If DN-1000 bass is tight and full-bodied, with attack and impact, DN-2000J's bass is nothing different, but with considerably better definition and texture. In fact it is the best bass quality I had the pleasure to experience to date. Addicting, tight and detailed, lush, magnificent texture and resolution, fast, articulate, accurate. When called upon, can satisfy any moderate basshead (using dual flange tips) and it's suitable for any genre, including EDM. Once you listen to a bass like this, you can't go back. I haven't heard any bass that comes close to this quality and this is not all, let's keep moving.

It's hard to beat DN-1000 mids. But these do. Mids are as liquid and organic as it is sonically possible. So detailed and textured, so clean and transparent. Creamy. Vocals sound "unreal", so clean, so detailed, what can be called "Hi-Res" and what really impressed me as well were the electric guitars. With the DN-1000's they sound just right, crunchy guitars with attack, here they are a step forward, more elevated, you "feel" and hear them effortlessly. The same for saxophones and trumpets which sound considerably cleaner and clearer. More fluid and pleasant. Makes DN-1000 (and more so Titan 1) sound a bit muffled in this regard. There are certain frequencies you almost don't notice with DN-1000, or they just sit in the background. With the DN-2000j's, you hear them loud and clear, so the experience is richer and fuller. Mids are indeed one of a kind. Detail-retrieval is magnificent for the price. We could be talking AKG K3003 levels of detail here.

Top end is as detailed, refined and polite as DN-1000 (have a look at my in-depth review), but with better extension, clarity and finesse, which is to be expected from better drivers and their impressive frequency response. Treble is more elevated than DN-1000, can sound a bit hot for some, especially if you like Metal. I had to reduce EQ to -1 from the FiiO X3, I like to use DN-1000 at +2 just to give you an idea. If you don't EQ down -1 or leave it just 0, depending of your tolerance to treble, cymbals and hi-hats can sound a bit artificial, so remember this when you first listen your DN-2000J's. I've also came to the conclusion that the red rings are essential for an even better treble extension and soundstage depth. When you do this, everything will sound just RIGHT and absolutely stunning. Same for tips, only MEE dual flange tips with wide bore, make them sound perfectly natural to my ears. Your mileage may vary here. After these adjustments, top end is bright and crisp, detailed and sparkly, natural, airy, polite and refined. Hard to find any better, even from much more expensive IEMs. AKG K3003 comes to mind (from brief audition).

When it comes to separation, well, it's outstanding. A tad better than DN-1000, even though soundstage is pretty similar. Wide. Both width and depth. But you can pinpoint all the instruments with better accuracy. Layering is more 3-dimensional than any other IEM I've heard in the $500-$700 range, you feel there's a space or a separation, a certain distance between each layer of instruments placed in a 3-dimensional space, a sense of distance/depth between the various layers. It's spectacular. Sometimes it gives you a sort of 5.1 surround sound experience, which is very impressive. The choice of the drivers, the integration, was ingenious.

Dynamic expression is obviously excelent, couldn't be any less than DN-1000. The difference is that all the frequencies (except bass) are more elevated, so PRat (Pace, Rythm and Timing) is more convincing. I definitely have a bit more fun from the 2000J's. Or at least they wow me more often, possibly due to their superior technical abilities and given immersion. The biggest difference is detail and clarity. Sometimes DN-1000s sound muffled and congested after A/B. Levels of detail/micro-detail are astonishing and with the forementioned EQ and tips, never fatiguing. Even because they're not just analytical, there's lots of explendid "Hi-Res" jaw dropping bass.

A IEM that makes DN-1000 sound congested and a bit lifeless, has to be something extraordinary. If you read my DN-1000 review, you understand why. This allied to superior separation, clearer mids, better clarity and detail, superior treble extension and finesse and better bass, makes them justify the 200€ difference and I wouldn't hesitate in getting the DN-2000J if money is not a limitation.

Don't get intimidated by the words "extreme detail". Usually we associate this to analytical, cold, etc. Not the case here. This is no RE0 or Ety ER4P. DN-2000J is very musical, it has sufficient body to sound full and fun. I think it's the first IEM at this price point that has the best of both worlds. Analytical, but fun/full-bodied and suited to all genres. I personnaly loved the experience with Electronic music.

My difficulty with the DN-2000J's was to find out the right EQ, rings and tips, because with the wrong rings, wrong EQ and wrong tips, they can sound a bit metalic, just not right. So it took me some time to discover what can make this IEM truly shine. And I'm glad I did because DN-2000J is a gem of a IEM. This SQ for $349 is nothing but unbelievable. So I settled on red rings (they give better treble extension and amplify soundstage depth, which makes the overal experience more engaging and satisfying), EQ -1 (for treble) and dual flange tips with wide bore. These tips can be found on ebay, from MEE (MEE dual flange).

The subwoofer effect

A very special note about the bass rings. First of all and as mentioned before, without the bass rings, DN-2000J's have plenty of bass, almost as much, if not as much as DN-1000. But with the bass rings, they have twice as much bass/sub-bass (literally) and without affecting bass quality at all. But it affects the rest of the frequency spectrum a bit. At first things were sounding just a bit muddy to me, untill I EQ a bit and all's fine again. Still not as much detail as without the bass rings though. I think that the bass rings (in my case along with red rings) can satisfy even the most die-hard basshead. So you can have a "bass-monster", or close to it and a "detail-monster" in the same IEM, which is probably many people's "dream IEM". At least, I'm enjoying this config alot and haven't experienced anything like this from other IEMs so far. The bass ring makes the IEM act as if it had a dedicated subwoofer, body and sub-bass are indeed very impressive and engaging. Just as a side note, vocals sound now a tiny bit warmer, which is delicious, but still very clear.

Sound Customization

As you should know by now, DN-2000J allows several sound customizations, using the bass, red, blue and silver rings. You can combine them for even more sound customizations. Just be careful for the tips not to stay inside your ears, especially when using 2 rings. Using adhesive tape in the nozzle after the ring(s) insertion is the safest bet. The tip will stay firm and you also won't lose any ring, which is pretty easy, since they're so small. I was using blue rings for better results, but recently decided to try the red rings. There was an immediate improvement in sound quality, even better treble extension, tighter bass and a more immersive, richer sound. This is personal preference, but as you can see there's a few customizatons you can try here. It's well worth trying them all out as we all have different sound preferences and you can achieve your prefered sound sig with the 4 rings (or none).


DN-2000J is one of the most detailed and immersive IEMs I have ever heard, with a bass quality that is second to none in IEMs, Audeze LCD-X-like bass. Instrument separation and imaging are outstanding, accuracy and tuning are stunning. With the bass rings you can have a basshead IEM, that still retains amazing levels of detail (with just a bit of EQ), levels of detail that surpass more expensive IEMs like Sennheiser IE800 (from brief audition), Westone W40, UM Merlin, etc. Without the bass rings, bass quantity is still plenty and you get even more detail/micro-detail, without EQ. Soundstage is pretty wide, typical of Knowles TWFK drivers and with the forementioned rings it reaches more depth, which gives even more immersion to the music. All in all one of the best investments you can do for a true, authentic audiophile experience for a relatively low cost (considering competition - SE846, K3003, etc).

I would like to thank Dunu for the review sample and obviously present them my congratulations for another product that punches above its price point. Well above its price point. This IEM outperforms Sennheiser IE800 in my opinion, which cost almost twice as much. AKG K3003 at $1000 would be the real competitor, let's be fair. And this means alot. Means that Dunu is offering you much more for much less and few companies are willing to do this. You can have a $1000 sounding IEM, or close to it, for $349. This says it all. Our highest recommendation and 2015.

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