this post was submitted on 12 Nov 2023
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Hey everyone, I recently released my first collaboration IEM, the DUNU Mirai, so I thought it’d be a fun opportunity to answer some questions about what shaped its development. I’ll also be happy to take questions about anything else pertaining to audio!

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[–] Pid3rMan@alien.top 1 points 1 year ago

Ah 1100$ perfect, right in my budget.

/s

[–] AnimeAlt44@alien.top 1 points 1 year ago

I remember you said in the past you don't like appearing on video but these days you've become one of the Headphone show's best presenters. Do you enjoy it more now that you are better at it?

[–] MOK1N@alien.top 1 points 1 year ago

What are your thoughts on the rise of planar-magnetic technology in the IEM world? Any other new trends you're hoping to see in the future of IEM's?

[–] Yodamanjaro@alien.top 1 points 1 year ago

Will the Mirai have ear pressure venting like 64 Audio IEMs or the NO Butastur? If not, why?

[–] LaoRenMin@alien.top 1 points 1 year ago

Can you share something on the development of its design and form factor? It seems like it's bigger than the previous releases of Dunu.

[–] carlcamper@alien.top 1 points 1 year ago

What was the consideration for using a BA supertweeter over an EST for the Mirai?

[–] HaruBestGirlEver@alien.top 1 points 1 year ago

Will you include your signed workout pics in the box?

Also why Dunu?

[–] jumboshrimp93@alien.top 1 points 1 year ago (1 children)

What’s your favorite over ear headphone?

[–] Precogvision@alien.top 1 points 1 year ago

None of them 🙈

But if I HAD to choose one, it’d probably be the Susvara or the HE1

[–] maisaku18@alien.top 1 points 1 year ago

What is your favourite driver set up in IEMs?

Single Dynamic drivers, Full BAs, Planar or Hybrid etc.

Were you able to use your favourite driver type in Mirai?

[–] Medium_Web6083@alien.top 1 points 1 year ago (1 children)

Can you share your impression of Mirai compared to U12T and Sony Ier m9 ?

Does it sound lean thin and bright or thicker and natural in general?

how is the bass and vocals does is it sound like Audeze lcd 3? I'm still dreaming of iem that sound like lcd 3.

[–] Precogvision@alien.top 1 points 1 year ago

So I think a lot of people were expecting a 64A-esque tuning, but I ended up taking the Mirai in something of a different direction. The most significant distinctions compared to the U12t are the Mirai's peak coming back up at 4kHz (versus 5kHz on the U12t) and significantly more energy at ~8kHz where the U12t dips. This basically gives the Mirai some more bite in the upper-midrange and more of a focus on sparkle in the treble. It also won't sound as bass-y even if they graph similarly in the bass region. Basically, they sound like very different IEMs in practice, and I wouldn't really think of the Mirai as being a U12t replacement.

Compared to the IER-M9, it’ll be a lot less warm and it’ll be leaner.

Doesn’t sound like the LCD3, sorry. Honestly, I found the LCD3/4 to not be my cup of tea, something like the UE Reference Remastered would probably be closer to that type of sound (but still not nearly the same).

[–] admiralnorman@alien.top 1 points 1 year ago

I would like to pick your brain from an IEM knowledge perspective if that is okay. In my journey I went up to the $1k range and back down to settle into the Moondrop Kato. It took that journey for me to realize that I needed the longer nozzles on the Kato to get the fitament correct. Turns out for me to get the same sound that the reviewers talk about, Its just what my ears need. I did try Eytomotic but it was too far and unsettling. Do you know of any other IEM that have a similar fit/long nozzle like the Kato that are not so far as to by Eytomotic?

[–] overlordRush@alien.top 1 points 1 year ago

who's your waifu, and why is she a 300 years old tan loli demon?

[–] GamemasterOfNight@alien.top 1 points 1 year ago

Are there any genres of music the Mirai plays particularly well? Or, could you share any tracks you used for reference while tuning the Mirai?

[–] blackrao@alien.top 1 points 1 year ago

Have you ever heard a BA driver hit like a dynamic driver in the bass, or are all BA IEMs doom to have worst dynamics in bass than the dynamic driver counter part?

[–] carlcamper@alien.top 1 points 1 year ago

Any plans of purchasing a 5128 in the future?

[–] Fc-Construct@alien.top 1 points 1 year ago

When are you going to send your good buddy Fc-Construct a Mirai?

[–] AntOk463@alien.top 1 points 1 year ago (1 children)

You guys are sponsored be Headphones.com and get your equipment for anything you test from there, can you explain further how that works? How long do you have a product before you have to send it back? Then what happens with it, is it cleaned and sold as a new product or cleaned and sold as an open box product?

[–] Precogvision@alien.top 1 points 1 year ago

Sure, so the units are often sourced from our own stock (Headphones.com pays for it) or they come directly from manufacturers. Reviewers often have them for a couple weeks (sometimes longer, if it’s not high-priority) before they’re sent back to HQ or passed onto the next reviewer. We do keep a couple on-hand long-term for reference sometimes (for example, I’ve had a U6t from them for a couple years haha).

I’m not 100% sure what happens to the units after, I think some do end up as open box if they’re super clean (and sourced from our own stock) but most of them are just kept around as references.

[–] GhesusChristt@alien.top 1 points 1 year ago

Hello, i love your target honestly. And for the iems, its good to see this bass shelf, treble can be fixed with eq but for the 1k usd you should not have these peaks and dips and use the eq. It will be good the see a review about technicals.

[–] AntOk463@alien.top 1 points 1 year ago

I've been thinking about this for a while, why doesn't Headphones.com open a physical store? Normally audiophile headphones stores aren't successful, people come to try headphones but buy them online as Amazon has a better return policy and it can be easier and more convenient. But Headphones.com is a major headphones store, so people can just buy in store as it's exactly like buying online, it should still have the 365 day return policy, allow them to return them online, and people who bought them online can return in person. This will not have any shipping time and no chance of damage from shipping, so people will be interested. Obviously starting with only 1 physical store and after seeing the success of that determine what to do with this idea.

[–] flylikeawind@alien.top 1 points 1 year ago (1 children)

How can we trust you as a reviewer when you are actually working so closely with a manufacturer? There is so much conflict of interest here.

While you may not review you IEM, you will be reviewing future iems that is essentially a competitor to your existing collaboration. How can you ensure objectivity when you have a financial stake in this?

[–] Precogvision@alien.top 1 points 1 year ago

This is definitely a question that I was anticipating.The short answer is that you are 100% correct that it’s a conflict of interest. There’s nothing I can do that will change this (short of quitting as a reviewer). But I can do my best to massage some doubts.

Financial motivation is the conflict that most people will point to. And while I usually shy away from talking about personal finances, I have to point out that I don’t review for a living. My content work makes up less than 10% of my total income. That could change, but I don’t have a strong incentive to push sales of my IEM because what I make from my full-time job is enough to sustain myself and dwarfs what I make from reviewing.

More importantly, I’ve also built up a strong reputation for honesty. I see this as a long-term feedback loop, where people keep coming back to my reviews because what they experience is consistent with what I write, or I offer a useful perspective. If I suddenly switched up by panning everything as being worse than Mirai, I would be breaking this trust. It’s difficult to build trust, it’s easy to break it.

On a more sentimental level, the goal behind Mirai wasn’t entirely about turning it into a collaboration to sell to the market. I really just wanted an IEM that I could call my own, with my idea of good sound. But you need resources to build your own IEM, and there needs to be a reciprocal relationship to springboard development, hence why it became a collaboration.

I know there’s an element of “trust me bro” to this response and that I’m very fortunate to be in a position where I don’t need this to be my bread and butter. And of course, collaboration IEMs will always present a conflict of interest. But hopefully this helps to address some concerns!

[–] vivi112@alien.top 1 points 1 year ago (1 children)

What do you think about xMEMS drivers? Will they revolutionize IEM market in the next few years?

[–] Precogvision@alien.top 1 points 1 year ago

I think they are an interesting technology, very compact driver with full-range extension. But for now, the limitation is going to come down to tuning them, as the current ones require a lot of DSP to sound decent.

[–] ffirowtard@alien.top 1 points 1 year ago

1 rep max bench?

[–] Lankythedanky@alien.top 1 points 1 year ago

My buddy scoffed at the price, whereas it seemed relatively justified to me. What goes into making a kilobuck IEM and why are they that much money?

[–] Zernium@alien.top 1 points 1 year ago

Why do you prefer IEMs to headphones? I've been unimpressed by most iems I've tried, and the only good thing I can say about IEM sound is that the intimate vocals can be more engaging at times. Everything else, especially stage and resolution, seems so much worse compared to headphones.