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They stick out from my DT880 2003 shell just a bit :/ enough so that I can't comfortably wear them
Orthodynamic Roundup
- Thread starter wualta
- Start date
-
- Tags
- amfiton-tds-15 audeze-lcd2-planar-magnetic-headphones fostex fostex-t50rp-closed-ear-stereo-headphones headphones mrspeakers-mad-dog-t50rp-mod sennheiser-hd-600 sennheiser-hd-800-headphones stax-sr-40 stax-srm-1-mk2 yamaha yamaha-electronics-hp-3-headphones yamaha-hp-1 yamaha-hp-3 yamaha-stereo-headphones yamaha-yh-1000
Stick on some Ori pads or HM5 angled pleather or leather pads.They stick out from my DT880 2003 shell just a bit :/ enough so that I can't comfortably wear them
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I'll give it a go again I suppose!
richard51
Headphoneus Supremus
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I now added sorbothane duro 70 1/4 inches thick to the Fo.q tape Ta 32 I used already to damp the Fostex T10 with great success....The Fo.q. tape act mainly from the high frequencies to some bass frequencies, and complementarily the sorbothane duro 70 1/4 inches thick act from the bass frequencies to some higher one, they are very complementary... The improvement is audible in the first minute, more 3 d , more realistic, more clarity across the board...It is not necessary to open this headphone to mod it rightfully, and it is better to use Fo.Q tape and sorbothane, very known product with well known damping properties when you use them carefully than to use unknown materials with unknown damping properties ...Remember that the cable is a great source of noise and can be modified with gluing stones beads (Chrysocolla and Tourmaline) without paying someone else to replace it....And it is very important to relatively isolating the 2 cups one from each other with sorbothane (only using duro 70 with headphone), because resonance problems are one of the greatest design annoyance in headphone...
This Fostex will be now impossible to beat at a low price...Which headphone is natural for the timbre sound, and speaker-like for the imaging ? Not one I owns ever posess these 2 attributes at the same level at the same times....They surpass the Akg 701, AKG 340, the basic stax and even the STax SR-5 gold, and all my others, by a great margin, they even killed my Mission Cyrus speakers for my pleasure listenings hours... My sansui AU-7700 was a perfect consort for this Headphone because of the subtle quality tone controls that help a lot to refine the balance between the high frequencies recessed in the T10 and the other frequencies, at the end sublime highs with perfect velvet mids, and bass of great clarity... ... Probably some headphone, over one thousand dollars but not all of them, are on par with the T10... The unique diaphragm construction is probably the reason by design of their particular sound quality. The modifications to improve the cable and damping them rightly make them King...
I will copy for you the old Wikiphonia page :
«Fostex T10 - Overview
The cheapest of the original 1978 lineup of Regular Phase (RP) headphones, the T10 is not a simplified version of the world-famous T20, as one would expect, but something unique, and, as it turns out, arguably a better-sounding headphone in stock form than the T20. The T10's magnets are unique: instead of small drilled holes as in the T20 and T40 and most other manufacturer's planar magnetic headphone drivers, or several parallel slots in the case of a few (e.g., T30), the T10's magnets have concentric slots.
General Description of the Sound
The T10 in stock form is smooth but dull or bassy, though not in an uncouth way, just tilted downward, as so many stock iso/orthos are, toward the treble. The treble is present, it just seems to come from far away-- the Stax SR-30 entry-level electrostat, for example, beats it easily in treble output. The T10 delivers better than average sound for an unmodified isodynamic headphone, better than the stock T20v1 and arguably better than the stock T30. Fostex made an attempt to damp the T10 with the same type of absorptive mineral-wool puck it used in the far more costly T30 and T50v1 and that Stax used in the SR-30. Interestingly, the T10 is a little more efficient than the T50. Modifying the T10 for flat response should be simple, and it could be recommended as a good starter isodynamic if only it weren't rare.»
I want to thanks all that describe first this marvellous headphone to me here... I dont remember all the many posts on this thread (Wualta,Armaegis and others) that speak great about them...
This Fostex will be now impossible to beat at a low price...Which headphone is natural for the timbre sound, and speaker-like for the imaging ? Not one I owns ever posess these 2 attributes at the same level at the same times....They surpass the Akg 701, AKG 340, the basic stax and even the STax SR-5 gold, and all my others, by a great margin, they even killed my Mission Cyrus speakers for my pleasure listenings hours... My sansui AU-7700 was a perfect consort for this Headphone because of the subtle quality tone controls that help a lot to refine the balance between the high frequencies recessed in the T10 and the other frequencies, at the end sublime highs with perfect velvet mids, and bass of great clarity... ... Probably some headphone, over one thousand dollars but not all of them, are on par with the T10... The unique diaphragm construction is probably the reason by design of their particular sound quality. The modifications to improve the cable and damping them rightly make them King...
I will copy for you the old Wikiphonia page :
«Fostex T10 - Overview
The cheapest of the original 1978 lineup of Regular Phase (RP) headphones, the T10 is not a simplified version of the world-famous T20, as one would expect, but something unique, and, as it turns out, arguably a better-sounding headphone in stock form than the T20. The T10's magnets are unique: instead of small drilled holes as in the T20 and T40 and most other manufacturer's planar magnetic headphone drivers, or several parallel slots in the case of a few (e.g., T30), the T10's magnets have concentric slots.
General Description of the Sound
The T10 in stock form is smooth but dull or bassy, though not in an uncouth way, just tilted downward, as so many stock iso/orthos are, toward the treble. The treble is present, it just seems to come from far away-- the Stax SR-30 entry-level electrostat, for example, beats it easily in treble output. The T10 delivers better than average sound for an unmodified isodynamic headphone, better than the stock T20v1 and arguably better than the stock T30. Fostex made an attempt to damp the T10 with the same type of absorptive mineral-wool puck it used in the far more costly T30 and T50v1 and that Stax used in the SR-30. Interestingly, the T10 is a little more efficient than the T50. Modifying the T10 for flat response should be simple, and it could be recommended as a good starter isodynamic if only it weren't rare.»
I want to thanks all that describe first this marvellous headphone to me here... I dont remember all the many posts on this thread (Wualta,Armaegis and others) that speak great about them...
Last edited:
nick n
Headphoneus Supremus
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I recall using Sorb in my T10 to great effect.
Totally surrounded the driver housing with strips, then two longer rectangular strips across the rear cups on the insides.( perhaps some small bitties on the baffle rears i forget )
At the time I only had 30D, pretty sure I have some 70D here now.
Not sure if I used any Twaron AngelHair inside or not.
Then I think some Arctic Cotton material over the rear vents.
Total transformation.
Recabled them with a *trial very lightly twisted teflon-coated Russian mil spec copper wire.
Looks semi-decent not tidied that up fully yet.
Richard do yours still have the side badges on them?
If so are they mainly black with writing, or are they the ones with more silver area on the badges?
There are at least two versions, my thinking is the blacker badges are earlier, silver seem to have slightly better top end.
The only reason I know this is because I have had a few and the differences are similar all around each set, and I have compared.
Either one is great , just preferences I suppose.
Still waiting on that fancy anti resonance tape
Totally surrounded the driver housing with strips, then two longer rectangular strips across the rear cups on the insides.( perhaps some small bitties on the baffle rears i forget )
At the time I only had 30D, pretty sure I have some 70D here now.
Not sure if I used any Twaron AngelHair inside or not.
Then I think some Arctic Cotton material over the rear vents.
Total transformation.
Recabled them with a *trial very lightly twisted teflon-coated Russian mil spec copper wire.
Looks semi-decent not tidied that up fully yet.
Richard do yours still have the side badges on them?
If so are they mainly black with writing, or are they the ones with more silver area on the badges?
There are at least two versions, my thinking is the blacker badges are earlier, silver seem to have slightly better top end.
The only reason I know this is because I have had a few and the differences are similar all around each set, and I have compared.
Either one is great , just preferences I suppose.
Still waiting on that fancy anti resonance tape
Last edited:
richard51
Headphoneus Supremus
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I recall using Sorb in my T10 to great effect.
Totally surrounded the driver housing with strips, then two longer rectangular strips across the rear cups on the insides.( perhaps some small bitties on the baffle rears i forget )
At the time I only had 30D, pretty sure I have some 70D here now.
Not sure if I used any Twaron AngelHair inside or not.
Then I think some Arctic Cotton material over the rear vents.
Total transformation.
Recabled them with a *trial very lightly twisted teflon-coated Russian mil spec copper wire.
Looks semi-decent not tidied that up fully yet.
Richard do yours still have the side badges on them?
If so are they mainly black with writing, or are they the ones with more silver area on the badges?
There are at least two versions, my thinking is the blacker badges are earlier, silver seem to have slightly better top end.
The only reason I know this is because I have had a few and the differences are similar all around each set, and I have compared.
Either one is great , just preferences I suppose.
Still waiting on that fancy anti resonance tape
My salutations to you … I think I had the older version with the blacker badge... The top end is there but very recessed compared to mids and bass...Recabling is a good idea, this old cable are terribly microphonics...Now I use the tone controls of the Sansui to reequilibrate the relation between highs and mids frequencies...The sorbothane is in the process of break-in or settle-in place right now because the adhesive coating takes some times (days) to adhere completely, with minor compression (electrical tape), to the surface...Instead of recabling them I had put stones (Chrysocolla, and Tourmaline beads glued all along the cable (a little more of a third of it) I use nano magic double side adhesive tape for that... The sound will improve now after sorbothane break in...I never liked an headphone like I love this one...Their rendering of the soundstage adjust to the conditions of the original studio or live performance, the imaging is speaker-like, 3-d,holographic, and when balance is gained, with the recessing highs adjusted, their rendering of voices and timbre are more natural than all my other headphones (I dont use them now,only the 2 Fostex)...My last best headphone is a cheap dynamic Fostex heavily modified...The Fostex TH7 because of his 3-d soundstage and imaging....Because of that I go on with Fostex and bought the T10 that is superior because of a more natural rendering... Beside him the only other orthodynamic I heared to does not compared(Hifiman HE 400)… The Fostex is not the better headphone there is, but in the first level headphone realm. it is certainly one of the few very best...(if there is 2 levels:under one thousand and over one thousand)...Not all will love them like me, but all will recognize their basic qualities...
My deep thanks for your kind observations...P.S. I dared not to open them by fears to cause damage, they are bought with the original box in mint condition...All the mods I make were exteriors mods...I will be very sad if they were damaged because they are virtually irreplaceable...
Last edited:
richard51
Headphoneus Supremus
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The noise floor in your audio room or in your house is the most important factor in the final sound quality, more so than even the choice between dacs, amplifiers and even speakers if you add the necessary impactful effect of room acoustic treatment and vibrations controls......I just bought an Alan Maher magnetic waveguide uphill to my dac that I add to all my other tweaks and the lowering of the noise floor gives me a better clarity in my Fostex T10...This orthodynamic T10 is very sensible to the source, particularly sensible and more than my other headphones I think...The more noiseless background help a lot to love it more and the recessed higher frequencies are veiled by the level of noise... To cure that it is not necessary to OPEN them, but necessary to clean the source and damp them externally for sure...
One of my discovery about this headphone is how accurate and natural is the sound produced by it, provided that the source uphill to the dac and the electro-magnetic grid of the room is cleaned...The Fostex T10 probably because of their unique driver form are more sensible and prone to the noise level perturbations than any of my other headphone...
These remarks about the driver are from the Wikiphonia Page:
« The T10's magnets are unique: instead of small drilled holes as in the T20 and T40 and most other manufacturer's planar magnetic headphone drivers, or several parallel slots in the case of a few (e.g., T30), the T10's magnets have concentric slots.»
One of my discovery about this headphone is how accurate and natural is the sound produced by it, provided that the source uphill to the dac and the electro-magnetic grid of the room is cleaned...The Fostex T10 probably because of their unique driver form are more sensible and prone to the noise level perturbations than any of my other headphone...
These remarks about the driver are from the Wikiphonia Page:
« The T10's magnets are unique: instead of small drilled holes as in the T20 and T40 and most other manufacturer's planar magnetic headphone drivers, or several parallel slots in the case of a few (e.g., T30), the T10's magnets have concentric slots.»
Last edited:
richard51
Headphoneus Supremus
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A very telling example for me of the sensibility of the T10 is today, when I switched off my 6 modified Schuman generators connected to my stones grid, the imaging change, and soundstage collapse sensibly ,the air around each instrument was no more connecting the totality, even the rendering of timbre was not exactly the same...The cable is one of the noise source affecting the T10 and the nature of the source play a great deal in the sound quality... Then sometimes people reviewing the T10 speak less of the headphone itself and more so about their source and audio embedding gear and room...
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takato14
Headphoneus Supremus
Was asked to fix a rattling HP-1 by a friend I met at ZMFestivus, one of the newer guys in the hobby to my understanding. No biggie, I thought. Always like helping others out with this stuff...
Imagine my surprise when I opened it to find THIS!!
Imagine my surprise when I opened it to find THIS!!
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Hello all, checking in to say hello to all my old friends in the ortho thread. It's interesting to see the world of headphones has changed rather significantly because of this thread and the many contributions inside it.
A few questions please:
A few questions please:
- Does anyone out there have a list of all planar headphones/earphones released over the past half a decade? Including obscure stuff from the east
- Apart from Oppo, has anyone in recent years released an ortho with a Yamaha/SFI/PMB style driver (i.e. clamped in the middle as well as the outer edges)?
- Have there been any new vintage orthos re-discovered in the past 3ish years?
- Has anyone experimented with or produced a Ribbon headphone in the past few years?
ruhenheiM
1000+ Head-Fier
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Hello all, checking in to say hello to all my old friends in the ortho thread. It's interesting to see the world of headphones has changed rather significantly because of this thread and the many contributions inside it.
A few questions please:
Thank you
- Does anyone out there have a list of all planar headphones/earphones released over the past half a decade? Including obscure stuff from the east
- Apart from Oppo, has anyone in recent years released an ortho with a Yamaha/SFI/PMB style driver (i.e. clamped in the middle as well as the outer edges)?
- Have there been any new vintage orthos re-discovered in the past 3ish years?
- Has anyone experimented with or produced a Ribbon headphone in the past few years?
this one?
https://raalrequisite.com/sr1a-earfield-monitors/
@Kabeer - If ribbons interest you, the HEDDphone (by HEDD) with a single full AMT driver might also be something to look into.
takato14
Headphoneus Supremus
Wow, really nice to see you again!Hello all, checking in to say hello to all my old friends in the ortho thread. It's interesting to see the world of headphones has changed rather significantly because of this thread and the many contributions inside it.
A few questions please:
Thank you
- Does anyone out there have a list of all planar headphones/earphones released over the past half a decade? Including obscure stuff from the east
- Apart from Oppo, has anyone in recent years released an ortho with a Yamaha/SFI/PMB style driver (i.e. clamped in the middle as well as the outer edges)?
- Have there been any new vintage orthos re-discovered in the past 3ish years?
- Has anyone experimented with or produced a Ribbon headphone in the past few years?
We had quite a few new planars from both big and small companies:
Verum One and Verum Two (which is a concentric design like the yammies)
MyST Izophones 30, Izophones 60, and Ortophones (another concentric design)
Final D8000
HEDD Acoustics is releasing an AMT very soon
RAAL SR-1A, a true ribbon headphone
HiFiMAN has a few new models with impossible to remember names ( :x )
I'm sure others will be able to finish up this list.
On another note, just finished recabling my SS-100... this is just a temporary fix for now as I have something way more complicated for it in the works.
nick n
Headphoneus Supremus
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Nice cable job by the way. What craziness have you got planned multi tap multi swap electroluminescent cabling?
That HP-1 driver was Aniso I presume?
Kabeer great to see you pop in again.
In addition to the ones Takato mentioned there are also the following items around, and this is likely missing some stuff:
CURRENT ORTHO/PLANAR LIST
= Myst also has the IZO 7 low impedance fullsized one, are working on tweaking their new updated in-ears planar, and are prototyping a closed back at the moment.
= OPPO PM-1, PM-2 and PM-3 models kinda based upon the H25-c but modernized fully , a bit of Russian background there as the designer Igor Levitsky also designed the TDS-7, TDS 15 perhaps the H25-C etc,
way back and also has his speaker driver patents and designs currently. Audio Zenith does a for-sale mod on the PM2 called PMX2.
= Modder Snoory of Russian DIY fame now has a website with his various offerings >>> https://headmusic.ru/
= Kennerton Odin, Thor, Thror etc ( unsure if Drakkard is still there possibly not )
= VA Audio H1 Russian . Head-fi member cleg does a great review here : https://translate.google.com/transl...-audio-h-1-xendmejd-iz-kieva.html&prev=search
= Sash Deux Ukrainian custom, the name stands for "Studio Audio Sound Headphones"
https://www.head-fi.org/threads/sas...ound-quality-way-beyond-its-price-tag.909992/
https://www.facebook.com/Studio-Audio-Sound-Handmade-300941327300195/
= Rosson Audio Design RAD-0
= Various in-ear ortho/planars are popping up from
Audeze,
RHA Audio CL1,
Tin Audio P1,
Sendy Aiya https://porta-fi.com/sendyaudio-int...nes-and-aiya-planar-magnetic-in-ear-monitors/,
**** MT100 iem hybrid with a BA and Ortho inside,
of course the MYST one mentioned above ( Izo iem 2 I think ),
this DIY one https://www.head-fi.org/threads/earbuds-round-up.441400/page-1365#post-13526830
oBravo Cupid
= Erzetich Phobos https://www.erzetich-audio.com/products_phobos.html
= Mr Speakers released 3d print files for modders to do Alpha Dogs diy ( "Open Alpha" ) , plus all this other stuff obviously should be mentioned here.
= Blue Ella ( Fostex T50 based I think )
= Fostex Dekoni variant and the TH500
= ThieAudio Phantom
= ZMF has phased out their T50 based builds
= Modhouse has the T50 based ARGON mod ( who else I forget )
=
**** denotes a potential YOGA O.E.M. but tuned specific to particular company, there may be others here.
Some do say based on a German Driver design. This would likely be that driver >>> ( http://camerton-audio.com/binom-e when the website is back up , it is Camerton Audio )
= Sendy Aiva
= Quad Era 1 ****
= Acoustic Research H1
= Brainwavz Alara ****
= Blon something something
= Monoprice Monolith series various fullsized and their in-ears "clone" of Audeze's in-ears
= Simgot ET1000 ****
arrrgh what else there is more but not well known.
For new discoveries well kind of.
More like items under different company badges.
=A couple of us know of one PMB-6 variant under a different name, very flat FR, easy to drive.
= Some sonic variations on the Fostex T10 confirmed can be likely figured out by badge colouration, IF there are any badges remaining on what a person buys that is ...
=There are also 2 other Fostex-based ones that are indentical to the Denon SPH-90, just strange company names. Two sightings with one of them confirmed, the other company's one is still out there waiting.
=Saw one TDS-16 larger variant ( solid black ) one time by an as yet unknown to me old company.
There are variations in this larger TDS-16 I have confirmed over a few sets, it is a technical aspect of the driver's increased sound output levels and can be identified by certain outer headphone appearance.
Not as common at all.
Easily noticable sonic difference for the better.
+ someone also posted images in the thread way back with finding some unknown models of the PMB series.
+++ there might be other stuff I am forgetting.
*** P.S.***
Have still not run across that one you had been looking for ( no have not mentioned it to anyone ). One sure looked close a model number below that a while back. Was that you that bought it to make sure?
Though it is possible it also comes under another name as well, just a hunch there.
PLEASE HELP ADD TO THIS LIST
BTW if we are talking planar-like wavefront, then the new Kaldas Electrostatic , Obravo has some AMT based iems and fullsized, the new HEDD fullrange special AMT out soon, and ESS also has a hybrid fullsized with an AMT tweeter unit, then the In2uit OEM stuff ( they have their own too )like Mitchell and Johnson, aand the Bravo Sharkk things that all have the small square electret driver in hybrid with a dynamic.
Then there is the Mr Speaker stats, Russia's Phenomenon line of stats http://phenomenon.su/phenomenon-001/# and Perun had a couple neat looking electrostatics out too.
I have to say out of all of them I might bite on the Kaldas.
By no means is this complete given all the piezo types and electrets also.
Continual update edits as new are remembered or emerge posted below here.
Nov 2019
= Dope Audio single driver IEM
https://dopeaudio.pro/#our-product
Russian forum posts here
http://player.ru/showthread.php?t=236643&s=9c27f16bb621e85660964baf9fcd98a9
"Totally sealed. There is no ventilation. The pressure is controlled by a camera system with acoustic filters between them. A kind of hybrid PAS and bandpass of the 6th order, also placed in the rear and loaded on an inverted horn in front, and all this in tiny headphones"
Colour most likely to be black for production
Dec 2019
= TONEKING BL1 (iems)
neat looking photo here:
https://penonaudio.com/image/cache/catalog/MrZ/BL1/Toneking-bl1t-700x700.jpg
Not sure on release date seems earlier 2019, just ran across these.
14mm drivers, 24 ohm
= TFZ Balance 7 ( iems )
26.8 mm drivers , 18 ohm
photo here:
https://penonaudio.com/image/cache/catalog/TFZ/Balance 7/TFZ BALANCE 7-e-700x700.jpg
That HP-1 driver was Aniso I presume?
Kabeer great to see you pop in again.
In addition to the ones Takato mentioned there are also the following items around, and this is likely missing some stuff:
CURRENT ORTHO/PLANAR LIST
= Myst also has the IZO 7 low impedance fullsized one, are working on tweaking their new updated in-ears planar, and are prototyping a closed back at the moment.
= OPPO PM-1, PM-2 and PM-3 models kinda based upon the H25-c but modernized fully , a bit of Russian background there as the designer Igor Levitsky also designed the TDS-7, TDS 15 perhaps the H25-C etc,
way back and also has his speaker driver patents and designs currently. Audio Zenith does a for-sale mod on the PM2 called PMX2.
= Modder Snoory of Russian DIY fame now has a website with his various offerings >>> https://headmusic.ru/
= Kennerton Odin, Thor, Thror etc ( unsure if Drakkard is still there possibly not )
= VA Audio H1 Russian . Head-fi member cleg does a great review here : https://translate.google.com/transl...-audio-h-1-xendmejd-iz-kieva.html&prev=search
= Sash Deux Ukrainian custom, the name stands for "Studio Audio Sound Headphones"
https://www.head-fi.org/threads/sas...ound-quality-way-beyond-its-price-tag.909992/
https://www.facebook.com/Studio-Audio-Sound-Handmade-300941327300195/
= Rosson Audio Design RAD-0
= Various in-ear ortho/planars are popping up from
Audeze,
RHA Audio CL1,
Tin Audio P1,
Sendy Aiya https://porta-fi.com/sendyaudio-int...nes-and-aiya-planar-magnetic-in-ear-monitors/,
**** MT100 iem hybrid with a BA and Ortho inside,
of course the MYST one mentioned above ( Izo iem 2 I think ),
this DIY one https://www.head-fi.org/threads/earbuds-round-up.441400/page-1365#post-13526830
oBravo Cupid
= Erzetich Phobos https://www.erzetich-audio.com/products_phobos.html
= Mr Speakers released 3d print files for modders to do Alpha Dogs diy ( "Open Alpha" ) , plus all this other stuff obviously should be mentioned here.
= Blue Ella ( Fostex T50 based I think )
= Fostex Dekoni variant and the TH500
= ThieAudio Phantom
= ZMF has phased out their T50 based builds
= Modhouse has the T50 based ARGON mod ( who else I forget )
=
**** denotes a potential YOGA O.E.M. but tuned specific to particular company, there may be others here.
Some do say based on a German Driver design. This would likely be that driver >>> ( http://camerton-audio.com/binom-e when the website is back up , it is Camerton Audio )
= Sendy Aiva
= Quad Era 1 ****
= Acoustic Research H1
= Brainwavz Alara ****
= Blon something something
= Monoprice Monolith series various fullsized and their in-ears "clone" of Audeze's in-ears
= Simgot ET1000 ****
arrrgh what else there is more but not well known.
For new discoveries well kind of.
More like items under different company badges.
=A couple of us know of one PMB-6 variant under a different name, very flat FR, easy to drive.
= Some sonic variations on the Fostex T10 confirmed can be likely figured out by badge colouration, IF there are any badges remaining on what a person buys that is ...
=There are also 2 other Fostex-based ones that are indentical to the Denon SPH-90, just strange company names. Two sightings with one of them confirmed, the other company's one is still out there waiting.
=Saw one TDS-16 larger variant ( solid black ) one time by an as yet unknown to me old company.
There are variations in this larger TDS-16 I have confirmed over a few sets, it is a technical aspect of the driver's increased sound output levels and can be identified by certain outer headphone appearance.
Not as common at all.
Easily noticable sonic difference for the better.
+ someone also posted images in the thread way back with finding some unknown models of the PMB series.
+++ there might be other stuff I am forgetting.
*** P.S.***
Have still not run across that one you had been looking for ( no have not mentioned it to anyone ). One sure looked close a model number below that a while back. Was that you that bought it to make sure?
Though it is possible it also comes under another name as well, just a hunch there.
PLEASE HELP ADD TO THIS LIST
BTW if we are talking planar-like wavefront, then the new Kaldas Electrostatic , Obravo has some AMT based iems and fullsized, the new HEDD fullrange special AMT out soon, and ESS also has a hybrid fullsized with an AMT tweeter unit, then the In2uit OEM stuff ( they have their own too )like Mitchell and Johnson, aand the Bravo Sharkk things that all have the small square electret driver in hybrid with a dynamic.
Then there is the Mr Speaker stats, Russia's Phenomenon line of stats http://phenomenon.su/phenomenon-001/# and Perun had a couple neat looking electrostatics out too.
I have to say out of all of them I might bite on the Kaldas.
By no means is this complete given all the piezo types and electrets also.
Continual update edits as new are remembered or emerge posted below here.
Nov 2019
= Dope Audio single driver IEM
https://dopeaudio.pro/#our-product
Russian forum posts here
http://player.ru/showthread.php?t=236643&s=9c27f16bb621e85660964baf9fcd98a9
"Totally sealed. There is no ventilation. The pressure is controlled by a camera system with acoustic filters between them. A kind of hybrid PAS and bandpass of the 6th order, also placed in the rear and loaded on an inverted horn in front, and all this in tiny headphones"
Colour most likely to be black for production
Dec 2019
= TONEKING BL1 (iems)
neat looking photo here:
https://penonaudio.com/image/cache/catalog/MrZ/BL1/Toneking-bl1t-700x700.jpg
Not sure on release date seems earlier 2019, just ran across these.
14mm drivers, 24 ohm
= TFZ Balance 7 ( iems )
26.8 mm drivers , 18 ohm
photo here:
https://penonaudio.com/image/cache/catalog/TFZ/Balance 7/TFZ BALANCE 7-e-700x700.jpg
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