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Very musical and well balanced tonality when paired with eartips from the JVC FXD series IEM

A Review On: Dunu DN-1000

Dunu DN-1000

Rated # 33 in In-Ear
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Price paid: $175.00
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Pros: Musical and well balanced tonality. One of the best IEM with the most balanced and realistic tonality, for my sonic preferences.

Cons: Requires 3rd party silicone eartips (JVC EP-FX8) to sound best.

Hybrid 3 ways: 2x Balance Armature + 1x 10mm Dynamic driver



I was a bit disappointed with DN-1000 when I tried it out of the box. The treble was a bit metallic with the stock silicone eartips. The first few weeks with DN-1000, I used foam eartips, Comply T-500, that smoothen the treble, made the DN-1000 sounds very open and airy, but a bit lacking in bass. Until I did some experiments with more eartips, and found the silicone eartips from my JVC HA-FXD80 give the best sound and tonal balance for my DN-1000. Treble from the foam eartips & bass from the silicone eartips. Best of both worlds. It was a very happy moment, and I was not alone. I was with my friend Leo who is a sound engineer, and for hours we listened to DN-1000 with the JVC HA-FXD80 silicone eartips. We have same conclusion, very good tonal balance on the whole spectrum, without any annoying peaks and dips. Simply, we didn't find anything to fault the combination. From that moment, the JVC FXD80 tips stay on my DN-1000.


With the JVC eartips, DN-1000 sounds very balanced, realistic, and most important, very musical and fun sounding. DN-1000 has the realistic type of natural tonal balance, with no emphasize and deemphasize on any region of the frequency, just perfectly smooth and balanced. Good bass, clear mids, smooth and airy high, with good dynamic and lively sounding. Very good detail and transparency without sounding analytical. Truly an excellent all-rounder. With the JVC EP-FX8 eartips, sibilance is very well controlled without sacrificing clarity and transparency. I have no idea how the JVC EP-FX8 eartips do it, maybe there is a little bit of 'smoothening' on the treble, just slightly to remove most sibilance, without sacrificing treble detail. The result is simply amazing. Open, airy, transparent, without sibilance.The JVC EP-FX8 eartips is simply the 'missing secret ingredient' from the DN-1000 package.



Mids to treble transient is fast, and clarity is crystal clear, but i don't consider it sounds analytical. I guess it is due to the matching dynamic driver with the BA drivers, the dynamic driver seamlessly adds body to the midrange, creating clear and smooth midrange that never sounds dry or analytic. While the JVC EP-FX8 eartips smoothen the treble without reducing transparency and airiness. Balanced, smooth, transparent, and very musical, maybe the best way to describe how DN-1000 sounds with JVC EP-FX8 eartips.


Bass level and dynamic is better than DN-2000, better balance with the midrange. Only a few dB better, but since DN-1000 midrange is flatter and more balanced with the rest of the spectrum, not slightly emphasized like DN-2000, bass has better presence and body, and slightly better slam and punch than DN-2000 bass. But bass level is still far from basshead level. FX850 bass level in this case, is closer to basshead level. DN-1000 Bass power and dynamic is good and realistic, and low bass extension is nicely present in realistic level. But overall bass quality is not as good as ATH-CKR9 bass. CKR9 bass has better detail, texture, power and dynamic. I don't mean DN-1000 bass quality is bad, the bass is good. It is just that I ever heard better quality bass from other IEM, which is the ATH-CKR9. So there is still room for improvement for DN-1000 bass, especially on bass tightness and texture.


Imaging is impressively spacious and 3 dimensional, almost comparable to the excellent imaging of DN-2000, and sounds slightly more airy and open sounding than DN-2000, maybe due to higher level of treble in comparison to the mids. Instrument separation and placement is clear and focused, although DN-2000 is slightly clearer and more sharply focused. Imaging of the two is like comparing a very good quality consumer grade lens with a professional grade lens. Both are sharp, but the professional lens is slightly sharper. Listening to Chesky binaural recordings, DN-2000 gives slightly more realistic of the 3D imaging than the DN-1000. But DN-1000 imaging is still better than FX850 for binaural recording 3D imaging.


Beside the JVC EP-FX8 silicone eartips, Comply T-500 foam eartips is also my next favorite eartips for DN-1000, like on DN-2000. Comply T-500 + the silver adjustment ring gives a more airy sound, while retaining good bass. If you cannot get JVC EP-FX8 silicone eartips, try Comply T-500 + the silver adjustment ring. Another awesome combination for DN-1000.


I tried all the ring adjustment, and I prefer no ring for JVC EP-FX8 eartips, and silver ring for Comply T-500. 


DN-1000 sounds fun and musical for all the recordings I tried. IMHO, DN-1000 using JVC EP-FX8 eartips has the better 'all-rounder' tonality of the 3. It goes really well with all genres and recordings in my collection, from medieval classical to Baroque, Pop, Jazz, Movie soundtrack, to Dub Colossus, all sounds great and enjoyable! But I didn't try Rock music, because I don't have any. Being the cheapest of the 3, DN-1000 holds it's ground very well to be in the same class with DN-2000 and FX850. But please note, only when using the JVC EP-FX8 eartips. 





Tonality: Natural-realistic tonality, good bass, transparent, open sounding, smooth, and very musical. Slightly less refined than DN-2000, especially in level of detail, but can be musically more engaging.
Bass: Natural & realistic, a few dB higher than DN-2000, better bass slam and sounds more realistic. Very good low bass extension. Bass tightness and texture can be improved.
Midrange: Natural, open sounding, and smooth. Not warm and not analytic.
Treble: Clear and transparent, with good treble sparkle and upper treble extension. Might sound a bit metallic with some sibilance when using stock silicone eartips, but not with the JVC EP-FX8 eartips.

Detail: Good level of detail in a natural way, slightly less detailed than DN-2000, but better than FX850.
Imaging: Spacious and 3 dimensional.
Dynamic and Transient: Bass dynamic is good, better than DN-2000, but not as fast as the midrange and treble. Midrange to treble transient is fast and realistic.
Noise isolation: Good.
Comfort: DN-1000 has large diameter nozzle, around 5.8 mm diameter. This large nozzle could be an issue for small ear canals. As for me, DN-1000 is very comfortable.

Build & design: Housing is rather heavy, but very solid. Build quality and design is excellent, looks much better than DN-2000. Smooth bullet shape without any hard edges.


My DN-1000 after 6 months of daily usage, looks better than my 1 month old DN-2000.




I didn’t notice any significant changes before and after 2 days burn-in.


Effect of high output impedance amplifier
Explanation on DN-2000 section.
Similar as DN-2000, on DN-1000, low output impedance will improve clarity and transparency, while high output impedance will reduces the clarity, transparency, and also bass dynamic. Bass is a bit sloppy on high impedance output. Low output impedance of 20 ohms or lower is recommended.



Gears matching
Generally DN-1000 is not very picky on gears, not like DN-2000, maybe due to its balance and fun sound signature. I would say all the gears mentioned here sound great with DN-1000. Fiio X5 headphone output that sounds lacking in transparency on DN-2000, performs much better on DN-1000. Although still not as transparent as the Fiio E12DIY amp, but I don’t feel the treble is lacking.
Some gears that I found sound especially good with DN-1000 would be Yulong DA8, DACport, Dragonfly, and Fiio E12DIY amplifier with AD8599 Op-Amp + LME49600 buffer. 




One of the best sounding IEM from the balanced, realistic, and musical sounding perspective, regardless of the price.
Easy to drive, doesn't require high voltage swing. But low output impedance of 20 ohms or lower is recommended.

Comes with various types of eartips and ring adjustment for flexible sound tuning.
Both straight down and over the ears wearing style.

Good build quality with solid metal housing.

Sounds good out of the box requires no or minimum burn-in.

Soft and flexible cable with no coiling memory effect.


Bass tightness and texture can be improved.

Large nozzle limits the choices of third party eartips, and might not fit small ear canal.
Stock eartips found to be less than optimum compared with 3rd party silicone eartips, for DN-1000 to sound at its best.
Driver flex, mostly with stock silicone tips, much less, to no driver flex with JVC EP-FX8 eartips.
Relatively small cable for the relatively heavy housing. I hope the small cable will last.
Non-detachable Cable.


Suggestion for improvement:

Bass tightness and texture.

To include JVC EP-FX8 kind of eartips and Comply T-500 in the package.
Detachable cable with balanced cable included.

Ring adjustment is too thin and loose. It’s better if the ring is thicker with some grip to the nozzle.



Type : Hybrid 3 ways
Driver Unit : 1x Knowles Twin Balance Armature + 1x 10mm Dynamic driver
Frequency Response : 16 - 22,000 Hz
Impedance  : 10 ohms
SPL : 98 +/- 2 dB
Plug : L shape 3.5mm 24 Gold plated stereo Mini plug
Cord Length : 1.2m Y shape OFC cable
Detachable Cable : No
Left & Right marking : Clear. Left dot & L/R print on housing.
Weight : 26g
Accessories : 10 sets of silicone eartips, 4 sets of foam eartips, 1 pair of Earhook, 3.5mm Female to 6.5mm Male Adapter, 3.5mm Female to 2-pin Male Adapter, Aluminum alloy box, 4 pairs of metal adjustment ring. 










Discussion thread here:



Thanks for your detailed review. It was a huge factor in my decision to purchase these IEMs. Following your advice I am looking to get the particular JVC tips you referred to in you review but cant seem to find them online separately available from the JVC IEMs. Do you know of any source I could get the tips from?
Thanks! You can visit the discussion thread link above, I've linked the JVD eartips model to the Amazon Japan link.
"Thanks for your review. I had same problem with me. SpinFit Tips (S)+ Blue Ring works like charm! :D"
@xXSjnHassanXx Thanks! I will try the SpinFit with DN-1000 later.
If you can't find the ear tips that earfonia is referring to these VICTOR JVC EP-FX9L-B Spiral Dot Earpiece work great for me. I believe they are quite similar. I picked them up on Amazon and they're in stock
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