twith all due respect it feels like you have that opinion due to the dedication you have to the sony brand and hardware, that's ok ofcourse but the love for the brand may very well sway your opinion, ill be coming at it very much from a neutral position, i will review them side by side with no bias one way or another and will just end up keeping whichever one produces the sound i like best. as it stands right now i only know what i have read about which is apparently the u12t has some of the best bass to come out of a balanced armature and that is primarily due to using two of sonion's biggest armature drivers designed for sub bass alone and 2 knowles armatures to handle mid bass, its unlikely to be soft and not slam, but again its only what i have read.
i personally believe the sony headphones will have an advantage in cohesion and the frequencies gelling together better because my impressions of the M9 are that sony really really know how to make a good crossover, again its speculation at this point, maybe the u12t will be just as cohesive.
as for 64 audio gaining the hype due to their name... maybe so, but there is a good reason for that, i was around for when 64 audio were 1964 audio and even back then they were making a name for themselves, in fact they were doing so well they were sued by jerry harvey (JH audio) when releasing their first 6 driver in ears i believe it was, why i don't know but maybe JH thought they had the rights to the design, im not sure of the details, the point being 1964 audio were making moves a while ago and scaring the likes of ultimate ears and others, they have the reputation because they earned the reputation, not everything they make gets that love however with some big stand outs that dont get the reviews you would expect, looking at the u18t for example which many say is worse than the 12t for £1000 more.
none of this is going to matter when i put them side by side, which should be tomorrow, then ill listen for a few hours minimum side by side before making an assessment on the good and bad. i hope i dont offend anybody, particularly on this thread which is a M9 impressions thread aswell as an appreciation thread as i can see, ill post my review just as an interesting read for you guys, nothing more and certainly not as an exercise in M9 bashing because i think its a great IEM regardless.
> its unlikely to be soft and not slam,
Weird, because this is not my statement, it comes directly from Knowles. There are Interviews with the developers from Knowles where they got asked "Do you think your BAs will ever be able to beat Dynamic Drivers" and the short answer is "No". And Sonion absolutely shares this opinion, and there is reason to that.
The topic is way more complicated. Sony is, by far, the company that invests most money into development of In-Ear Headphone technology, and they always have been. It is not easy to beat the company that invented the technology and is putting most money into it by buying off-the-shelves hardware and tucking them together. Its not impossible, but its a tough job to begin with. Maybe Audio 64 was able to do that, but there is nothing in the U12t that justifies that assumption so i highly doubt it.
Audio 64 is limited to what Sonion/Knowles can do, and Knowles/Sonion say they can't do it. So it is to be expected that it won't slam and will be soft.
I mean Knowles and Sonion could do it, technically, but they would make a loss with them because the earphone market is only a tiny fraction of their income and the development cost would be insane. Why develop/design a product that causes you a loss of money?
Knowles and Sonion modify existing BAs that they designed to be used in hearing aids and they modify them in an way, that they can be used in earphones. And not just that, they do it in an universal way, that every maker can use their drivers.
To this day, they are based on the hearing aid they design/develop and both companies live from hearing aids, that is what they make money with. They will never ever design/implement something that will hurt their hearing aid business, they can not live without that.
The big advantage in using the Knowles/Sonion BAs is that they are insanely cheap (the best high-end model sells for 10-25$ per unit) and universal. _Not_ the sound. That is something important here. They try to archive the best sound they can do given these limitations, but the limitations exist. Limitations that Sony does not have, but later more about that. The big disadvantage is, that they need dampers, soundpipes and lots of other hacks to make them usable.
And this is not my personal opinion, this is an statement from the people who design, build and develop the BAs at Knowles themselves. Knowles them self say that, in the way they design their BAs, they will never be able to beat any dynamic driver and that is why the recommend to use them in an hybrid setup.
Sony was investigating Knowles BAs when they developed the XBA series back in 2008 and decided against them due to exact these disadvantages which still exist to this day. That is why they decided to develop their own BA, because there was no (and still there is no) BA that was designed and developed to play music.
And they wanted an BA that sounded exactly how they wanted it to sound and implement it exactly they way they wanted it to implement. Using an device that does exactly what you want from it gives you a big advantage over an universal device that you can modify in its limits.
The best sold Headphones in Japan and most other industrial countries are the WH-1000X and WF-1000X Series, since years. Sony makes a crapload of money with them and use the income they make with these, to co-finance the very small and specific audiophile products.
Its the same with the Xperia smartphones. Sony makes mostly loss with them, but they develop them because they want to have them. The CEO says "I want that Sony builds smartphones, no matter what". That is something most companies can't due because they lack the money. So you have to admit, it is a very very hard job to beat a company like Sony which is able to do things that make no sense and cause the company a loss, just because they want to make them because they make enough money in other parts.
Sonys BAs have a lot of disadvantages, that is important to note here. First of all, they can not be used in hearing aids (something that is essential for Knowles/Sonion). Also they are not universal, you can not just put them in any earphone. You have to develop the earphone exactly for this driver.
Also Sonys BAs are designed to be used with Sonys film capacitors. Use different capacitors and they will sound different. So you're not just limited on how you implement them in general, you are also limited in what capacitors to use with them.
Again, it is an insane advantage if you're the company that develops the drivers, the housing, the capacitors and the circuit connecting everything. Sony is always reduced to developing their own BAs, but that is just not true.They are the only company that does all the jobs needed and that is why they succeed.
If a company would buy the drivers from Sony and want an earphone that can compete with the IER-M9, they would have to build an exact copy of the IER-M9, everything else will sound worse.
That is, from a driver development standpoint, an huge limitation. Why would anyone buy an driver that would limit you to mimic the earphone from that specific company? Nobody would ever buy that. Knowles/Sonion would never ever develop an BA that could only be used in one specific setup in one specific housing. That makes absolutely no sense for them and so they give up this big advantage for universal usage.
Knowles says, that their BAs can't slam like a DD, Sonion says the same. Its not me being a fanboy, its just the truth coming straight from the developers from the drivers.
Knowles/Sonion BAs are cheap alternatives to developing your own BAs, nothing more, nothing less. They have their limitations, Knowles knows that, Sonion knows that, its not a secret. If Audio 64 wants to beat Sony, they would have to develop their own BAs. They can't because they don't make enough money from their earphones so that will never happen. Case closed.
Listen to a good recorded Taiko drum with whatever all-BA earphone that is not from Sony you want, it will never sound authentic, never. Not with the U12t, not with the FA9, not with the S8, not with the Andromeda. Knowles/Sonion BAs can not reproduce an authentic Taiko Drum sound. Sony BAs can.
That doesn't mean the IER-M9 sounds better, that is still a matter of taste. A lot of people love this soft/fast BA sound, i did enjoyed the FA9 a _lot_. The HODVTEC had an insane bass response, especially with electronic music that made it sound unreal. But listen to a Taiko drum and it suc*s.
So not to confuse taste with performance. It is absolutely possible that a lot of people dislike the IER-M9, but that is unrelated to that the IER-M9 can do things no other all-BA can do.
Summary:
Advantages of Sonys BAs: Can sound exactly how Sony want them to sound
Disadvantages of Sonys BAs: Can only be used in Earphones (Not in Hearing Aids or other appliances). Need Sony Capacitors to sound exactly how they are supposed to. They to be implemented exactly how Sony says to sound how they are supposed to
Advantages of Knowles/Sonion BAs: Can be used in pretty much every appliance including Hearing Aids. Are Universal and can be fit in every earphone
Disadvantages of Knowles/Sonion BAs: Can not sound exactly how the maker wants them to sound due to limitations in their design
I don't buy Sony products because of the Brand Sony, i buy them because Sony puts the most effort into their Earphones and Headphones, its as simple as that. I don't specifically like the Brand Sony and that is why my Camera and Lenses, for example, are from SIGMA as my Stereo Speaker setup is not from Sony too. My Smartwatch is not from Sony, my Notebook is not a VAIO and so on.