It's actually very simple, you guys are complicating it. The FI-BA-SS is
an extremely good single-driver IEM, no it does not compete with JH16... which has... sixteen drivers... I directly A/B'd them for the record, and yes it is very expensive, and not as flat / neutral / reference sounding as the ER-4S.
If you want price / performance, get the Etymotic HF5.
If you want absolute note delicacy and celestial sound, get the FI-BA-SS.
If you want absolute technical performance / sound-quality, get the JH16.
If you want the highest technical performance level at the lowest cost, get the JH11, UM Mage, Thousand Sound TS432 / TS433, or reshell a UE700 / Rockit R-50 into a 4-driver CIEM.
Why am I recommending Chinese companies and reshelling? Because the JH13 is DTEC+TWFK, that's why. The drivers in almost
all universal and custom IEM's come from a company called Knowles, in Illinois, USA.
Now reflect on my Final Audio, Sony, JVC "pioneers" comment.
Reiterating the same palette of drivers with different shiny marketing, filters and acoustics isn't the same as driver research, for example diamond, sapphire and titanium vapour, wood and bio-cellulose, nano-composite, carbon-fibre, lithium, higher magnetic flux density, magnet research, voice coil research, multi-layer design.
The pursuit of extended/linear FR, transient response, attack/decay, realism/naturalism, note quality, exotic/unnatural sound is at an
absolute stand-still if you keep using TWFK over and over with different marketing, acoustics, crossovers and filters. You can sub-divide the sound-field and FR if you want, you can use two TWFK's and add a bass driver, for a total of five, and then coat them in acrylic (with some ink for a cool colour), that's called the Westone ES5.
Now, as for the new
Sony XBA series, the short story is they don't sound very ideal, even eliciting thoughts like "useless".
The long story is instead of making a new soft drink with "sugar+caffeine = profit", and sourcing that sugar from the closest farm possible, and tin cans from China, they didn't do that.
They made an entirely new soft drink, with a different composition, not using tin cans. That's what companies are
supposed to do, that's how you get new inventions, new products as a result of pioneering, and make a name and positive track record for yourself. Not just repeat variations of Coca-Cola over and over since that formula has worked in the past.
If Sony released the Sony XBA series in 1999, they would be the best portable audio experience on earth, later, Etymotic and Ultimate Ears would release the ER-4 and TF10, using the best BA's they could find from a hearing-aid developer, and then rival the XBA series with a different sound, and at
higher prices.
Today, in 2012, most people still haven't heard an in-ear yet, so the new XBA's are still successful nonetheless. For more experienced IEM listeners, they don't sound very ideal, but if you
delete your sonic memory for a moment (to Inks, you said it's very short, right?), then they actually sound very nice, and most importantly, completely unique the IEM arena, with a pretty decent sound/performance ratio at $250 for the top model, especially considering the "new soft drink, made in Japan" versus "coke with 1 million flavours" analogy.
On head-fi I see people falling deep for marketing, people that only believe in 'science' (a.k.a. if it's on paper), and then people looking for sound-quality/performance ratios overlooking company values.
...and for the record, if every IEM is supposed to be Knowles by some kind of "no point in rediscovering America" attitude, and a hearing-aid company in Illinois actually looks like Skynet in Terminator 2, then every full-size headphone should be made by Fostex, just different flavours of the T50RP and D2000. The Audeze LCD-2 and Sony Z1000 are wasting their time, not to mention electrostatic designs, after all, can any of them actually compete with the
Fostex/Denon D2000...
as far as science is concerned? Nope, they can't. The problem is as far as all scientific evidence on paper is concerned, the Apple earbud and STAX SR-009 should sound vaguely similar - at least if someone looked at the data, without any idea where the data intially came from.
Here's a comment from a company representative of balanced-armature drivers.
Sonion said:
BA receivers was first used in hearing aids due to the high efficiency compared to moving coil. Just recently are there more BA's being used for pro-audio. F.eks. Sony introduces a couple of BA universal earphones. Due to the dominating use of BA's in hearing aids means, that most attention has been to make efficient receivers and less focus on sound quality.
I personally want to see a growing use of BA's in the pro-audio area, because this is means that more emphasis will be made on lower THD, more headroom, bandwidth and so on.
Hopefully this post has covered my POV, and shared something useful.
Next step... pick up the Heaven IV, write some technical performance + fairy-tale accolades.