Tansio Mirai TSMR-4 Pro - Reviews
Pros: Inoffensive sound,
Has a more musical tuning
Fantastic mid range clarity and details.
Outstanding build quality
Tuning switches works well.
Cons: The cable could have been better.
Highs are slightly less emphasized.
There are a few Chinese brands that have left a mark in the market lately with their tuning and fantastic value propositions. Tansio Mirai or better known as TSMR has been one of them. TSMR has been very precise and careful with their earphones. The solid build quality has been consistent since their inception. They started with the TSMR 3 back in 2017 and now they have some of the best IEMs which are equipped with tuning switches to provide some variations of the base sound signature.

The TSMR 4 pro is one of the most promising earphone for under $500, priced at $319, it house 4 BA drivers in a 3 way crossover and comes in a lot face plate and shell color options. The market is flooded with options in this price. The TSMR 4 pro faces tough competition from earphones like Moondrop Blessings 2, Penon Orb, Secret Garden 3, Avara Av3 and the DUNU DK-2001.

Get a Pair of these IEMs from here: https://penonaudio.com/tansio-mirai-tsmr-4pro.html


TSMR hasn't changed the packaging scheme, it is exactly same as the TSMR2 and 3. Similar set of accessories too.

The retail package is not exactly elegant, it is more functional though. One basically doesn't fight with the box while taking the earphones out. You get a large zipper pouch stuffed inside a card board box. The carry case is as big as old gen external hard drive case. It is big enough to carry the earphone and a portable DAP.

Inside the box are the earphone and a pocket friendly carry pouch. Placed inside the pouch are 6 pairs of tips, a cleaning too and a tool to flick the tuning switches.

One will find a hand book explaining the switches finishes the list of accessories.





Build quality of the TSMR 4 is very good. It doesn't have the semi custom type body but sits inside the ear comfortably. The shell is made out of resin and feels very solid to the hand. The back plate is fused with a few layers of resin on it and the shells walls are thicker than most of the earphone.

There is a reason why the body feels stronger, you cannot put the switches on a weak shell and expect it to hold up. The switches are nicely fused and there is no need to worry about the setup coming off. Feedback of these switches is good but it is on the stiffer side. The 2pin port is flush on the body and removing the cable is fairly easy and smooth.

The nozzle is wide. Any T4/500 size tip will fit, I am using stock wide bore tips.




The cable is okay. If the Inear SD5 and Fibae 3 cables are bad, there is no need to complain here. The biggest thing I don't like about the cables is its cable guides. It is tight and can be uncomfortable over a longer period. Yes, this much of clamping is helpful when you like to go jogging with the earphone, but I don't find it good to use headphones or earphones while on the road where one has to be aware of the surroundings.

Moving on to the braided 4 core cable, it is supple and doesn't have much memory problem. It is not bouncy and doesn't have much microphonics either. The 3.5mm jack is metal clad and has good amount of protection to it, same goes for the y splitter. There is a cable slider too. The minimalistic design of the slider and Y splitter is always welcome.




I find the TSMR 4 pro to be more comfortable inside the ear compared to the Fibae 3 or Shozy pola, the reason being the combination of nozzle depth and size of the shell. The shell fits better inside the ear and the longer nozzle gives very good stability.

Ergonomically it is average, it doesn't have any type of wing to have better grip inside the ear. What really helps is the light weight. It is far less heavy compared to the Shozy Pola and is easy on the ear too. Thanks to the aggressive cable guides one need not to worry about the earphone falling out of the ear.

TSMR 4 has very good isolation from outer noise.


Pairing with sources:-

The TSMR 4 pro has a fairly low impedance of 20 ohm and is easily drivable out of mobile phones and thanks to 112db sensitivity it gets very loud without much problem.

Even when it plays well with any source, good amount of power does bring a lot more details and character to the table. Driven out of my LG G7 the TSMR 4 pro feels gloomy and notes lack much of the contrast and energy. The whole spectrum feels dynamically limited. The bass is lacking thump, treble is not energetic enough while the vocals and mid range are not much affected.

Jumping to Shanling M6 the scene changes drastically, the contrast and dynamic range improves a lot with plenty of treble energy and the lower end gains good amount of body. The stage is much more rounded and the layering and separation improves.

Driving it out of weak sources is okay but the power brings a lot more to the table.

The Switches:-

There are not many earphones in this price range which has tuning switches. There is a manual for that inside the box. In their words you can have 7 different sound modes and all the positions have a number assigned to them. The switches are numbered 1, 2 and 3 from left to right. On is on the left side and KE to the right side. If the switch is up, it is on and the carries the number of the switch, if a switch is off it is denoted by 0. If all the switches are on the position number is 123 and if all of them are off it is 000. The first switch (the 1 switch) is for bass boost. The middle switch is for balance and the last switch is for mid range and treble elevation. It is slightly tricky for the first time but it is not difficult once you get a hold of it. The 000 position is not a valid position and the sound in this position is very limited. You are supposed to keep one switch on, always.

If you think the switches bring a lot of difference to the sound, you might be a little disappointed. They do bring good amount of changes to the sound. Turning the bass switch on won't make take it to bass head levels. Expect changes, just don't expect a lot of it. Switches in 100 position does bring good amount of sub-bass and extension compared to the 003 position. Thanks to the switches the TSMR 4 can be flat, mid forward and can deliver healthy amount of bass with a few flicks of switches. That is a lot of versatility there, and the best part is, unlike tuning filters, the sound doesn't feel veiled or unnatural with any of those 7 switch positions.



I am going to review the TSMR 4 in 123 position, all guns blazzing!!

Quoted from penon:-

"Tuning mode instruction

0 means off (down) ,1/2/3 means on (switch position up)

Mode 1:

100:- Bass enhancement mode

120:- Mixed tuning

Mode 2:

020: All balanced mode

103: Mixed tuning

Mode 3:

003: Mid-treble enhancement mode

023: Mixed tuning

123: Mixed tuning (lowest impedance)"


The TSMR 4 has Knowles drivers in each earpiece. Each earpiece has 2 22955 drivers as middle and low frequencies and 2 29689 drivers for highs incorporated in a two bore design. The overall sound signature is of the balanced type with hint of dampness to the treble notes, it does not have any brightness to worry about. The treble can feel a bit dark compared to the wholesomely bright and light sounding Avara AV3 and AF180 Mk2. If a bit of excitement is the need of the hour, flick the switches. The tonality and timber are some of the most accurate in this price. It has the tranquility which is rarely found in this price.




The TSMR 4 is not bassy unless the no.1 switch is turned on. In the 123 position the 4 pro delivers good amount of slam and moves good amount of air too. It is not flat like ER-4P or the Audiofly AF180 while maintaining very good amount of details and texture. The sub-bass extension is not the best but is good enough. The focus is a bit more tilted towards mid bass. The Mid baas has good amount of weight and has a nicely fuller feel to it. The upper treble is a bit less emphasized with good amount of energy and details. The lower end strikes a beautiful balance between being overly agile and lethargic. In other words it doesn't have an unreasonably snappy or slow decay speed, it leaves a nice impression with good amount of slam and thump. BA driver earphones have fantastic amount of control over notes and are very accurate and the 4 pro is no exception, all the notes, even the micro details have very good clarity and definition. Just don't expect a lot of dynamism or a wholesome amount of thump and the TSMR delivers with fantastic details, technicality and accuracy. If you want more precision and an analytical tuning turn the no.1 switch off.

Compared to some DD the 4 pro has a tight and fast decay and can feel a bit less fuller but coming from something more analytical like the Nocturnal Avalon and AF 180 the 4 pro is much more full bodied and slightly on the thicker side.


There is no specification about the number of drivers used for the mid range but it is safe to assume that there is at least one and at max two drivers are responsible for the mid range. It can be either the driver coupled with the treble driver is doing the heavy lifting on its own or the 4 pro has two drivers in each bores partially responsible for the mid range. Whatever the configuration is there is no loss of energy in the transition region and the 4 pro maintain similar energy across the spectrum exhibiting excellent finishing around the crossovers. The mid range is cohesive and juicy, one of the few musically inclined IEMs in this price range. The notes are slightly on the lush side with a weightier feel to them along with very good accuracy and precision. The 4 pro leaves a bit smoother but a very enjoyable impression.

Vocals have a musical touch to them with excellent texture. The tonality and timber is one of the most natural and accurate in this price bracket. Both the male and female vocals have very good dept, a lot of resolution. Instruments don't have the kind of bite I have seen with other 3-4 BA earphones in this price but they already have very good transparency. If the extra bite is the need of the hour put the IEM in 003 switch position. Not sure what the graphs suggest but I don't feel any kind of forwardness or lack of energy at the upper treble region. It is perfectly balanced with excellent control over any type of undesirable notes presentation. The 4 pro doesn't lack any details by a long shot, it's the lack of added notes depth and sharpness which makes it sound a bit less exciting.

There are plenty of micro details and the accurate notes depth and sharpness makes the 4 pro very enjoyable.


It is safe to assume that there is one driver responsible for the whole treble region and it does a very good job. There are plenty of details and the contrast is dynamism is very good. The transition from upper mid range to lower treble region has no dip or extra energy to worry about. If the mind range was slightly mellow for a BA based earphone the treble region gains a bit of energy and exhibits good amount of spark and desirable amount of energy. The instruments feel lively and agile with a very natural timber. Let it be Cymbals or percussions, all of them similar emphasis with very good amount of texture. The transition is one of the cleanest but it still doesn't have the thrill of the AV3 and Jomo Percusion. The extension is not the endless type as the 4 pro starts losing energy as it goes much deeper into the spectrum. IT has good amount of air but there are IEMs like the Avara AV3 with more air.

Instruments are similar to the Mid range, it doesn't lack a single bit of micro detail but the slight lack of contrast of background and foreground along with a slightly lacking notes attack puts the 4 pro in the marginally less crisp side.


The sound stage of the 4 pro is very wide and tall but the depth can be marginally missing when compared to other IEMs in this price range. I find the stage to be big enough though. There is plenty of air and space between instruments. Layering and separation is of top quality too. Due to the slightly thicker mid range notes it might give an impression of a busier floor. Vocals hold the center stage with plenty of room and layering of the very good type.


VS Avara AV3 ($340):-

The AV3 is one of the best IEMs when it comes to pure sound quality. Equipped with 3BA drivers it is one of the most detail oriented IEMs.

The biggest difference can be observed with the imaging. The 4 pro has a much more directional projection, all the music and vocals are placed inside a well rounded stage, the vocals are dynamically placed depending on the demand of the track, the notes are not very tall either but the AV3 has immersive vocal notes with greater height, it is a lot more engaging with a bit more sharpness. What the AV3 misses out on is the dynamic placement, the vocals are a bit more intimate and are rarely placed father out of the head. Stage size of the AV3 is bigger in every direction and has slightly better air between the instruments thanks to more precise notes body.

Another discipline where the AV3 loses out on is the bass body and rumble, the 4 pro is not very grunty or rumbly, the AV3 has smaller volume but the impact leaves a more lasting impression. Everywhere else except the smooth and lush factors the AV3 is a step ahead of the 4 pro. It has a better sense of transparency. Don't confuse it with details, both have equal amount of details but the AV3 has more energy giving the note a shiny touch. Notes have better energy across the spectrum. Treble feels livelier and even though the extension is not of the endless type it holds up better.

Fibae 3 ($580) :-

Fibae 3 is the master of this realm when it comes to natural timber and tonality. The 3 BA IEM has something no one else can emulate, the excellent balance of details and musicality. The 4 pro tried to emulate that but falls a bit short with thicker notes and darker treble in comparison.

The Mighty Fibae 3 has better sub-bass extension and rumble but the mid bass is more subdued, lacking a bit more body and slam. The transition phases are similarly flawless as the 4 pro. The mid range is slightly less forward compared to the 4 pro with the no.2 switch on but has a bit more accurate tonality and timber. Notes have better precision with body and weight, specially vocals. Upper mid and treble region have more energy compared to the mid range and has the endless type of extension. The Fibae 3's treble region sucker punches the 4 pro without a single scratch on itself. The Fibae shows its superiority with technicality, precision and accuracy. The stage is much more dynamic too with excellent sonicality and cue placement. The only problem is the narrow width height and deeper depth, the 4 pro is much more rounded in this regard.

Both have the musical feel to them but the Fibae 3 lacks a bit of focus around the mid range and mid-bass, the 4 pro lacks a bit of prominence with the treble region.

VS Secret garden 3 ($359):-

The SG3 is a bit more energetic sounding IEM. It has slightly better notes transparency and a bit more energy resulting into a shinier imaging giving a feeling of better details. The SG3 has better notes depth and height.

Nevertheless the SG3 has similar switches to tune the sound and can be equally voluminous with lower end but the faster decay speed makes it lose some weight and thump. Sub-bass is slightly more rumble but mid bass is equally rounded. Mid range are a bit more forward and the instruments having more attack and bite. Vocals are slightly more precise but the texture is slightly missing on the SG3. Upper mid can be slightly more energetic. Treble region is brighter and more sparkly. The extension is similar though. Layering and separation is slightly cleaner thanks to faster notes.

Stage wise both are very similar, except the mid forwardness of the SG3 both are neck in neck.


The TSMR 4 pro is surrounded by a lot of competition but it has something unique too. Where everyone else is trying to deliver shinier and brighter notes the 4 pro takes a musical approach. It doesn't miss out on a single bit of details but it doesn't push the notes to their limit hence it has no harshness of any type. It makes even the sibilant tracks tolerable which none of the other IEMs can achieve. It has a lot of love in its mind with plenty a huge heart and will please someone who loves a good dose of bass, a cohesive mid range and slightly less attacking treble.

If you don't want brightness and energetic notes the TSMR 4 pro is the best option without compromising on the level of details. Just sit back and enjoy the music.



Pros: Strong contender for one of the best all BA in ears at the price point.
Tunable switches that has more of an effect for bass to mids
Good selection of tips that are usable.
26 dbs of passive isolation, makes for perfect out and about phones
Nicely balanced, competent technical, dimensional BA sound.
A larger case with a smaller pouch. Excellent high quality build.
Cons: Noodle like skinny cable with ear guides that dig into the back of your ears.
TSMR-4 Pro,
All BA in ear designs are nothing new in fact enthusiasts around the world should be well acclimated to BA in ears. The advantage of Balanced Armatures is as follows. Sound precision,speed, cleaner transients, dimensionality, focus in the form of less resonance, expansion of micro and macro details. Some of the highest regarded in ears are made of high end BAs in multiple formats stuffed in a variety of ways inside of universal or custom housings.

Tansio Mirai has been making all BA designs with some outstanding results and today I have the follow up to the TSMR-Pro 3 that adds an extra BA in the TSMR-4 pro. As the name applies TSMR-4 pro uses 4 BAs 2X CI-22955 and 2X ED-29689 knowles BAs, this time per housing and while ultimately the sound quality comes down to how the BAs are tuned. Here we get a natural advancement of what was included in the previous TSMR line of earphones.

I would like to thank Tansio Mirai for the review sample of the TSMR-4 Pro. Being able to hear the results of a well tuned well designed TSMR earphone has been enlightening for me as a hobbyist and a consumer of all things that sound excellent. I have to say I have been very impressed with every iteration of the TSMR line of earphones. As a quick side note. If you are interested in Tansio Mirai in ears. I doubt you will actually be able to find anything online that is negative about their in ears. This is a clear testament to their workmanship and quality. Now back to the review.

What you get out of the package seems to be pretty much the same from in ear to in ear be it the TSMR-2 to the 4Pros. Big large zip up black case. A pinch pouch standard noodle cable and a set of tips. One thing I forgot to mention in my previous TSMR-3 pro review you can read here.
Is that these actually come with tips that are usable. Why does this matter? I can’t even begin to mention just how many new earphones I have gotten that don’t have included tips that are actually optimal for the earphones. TSMR-4Pros come with these things.
Left Symbio W, Right TSMR- Green silicones.

Which surprisingly look and feel a lot like the community favorite Symbio W peeled tips. Almost identical but in a different color. These tips I feel is perfect for the earphones. It is actually refreshing to find some tips that actually maximizes the sonics of the earphones. The bad news is the same noodle like cable with the stiff ear guides also come with the 4pros like the previous phones. These cables fall into the category of. They work but you will more than likely toss them aside for something better.

Now onto the sound. The TSMR-4 pro was evaluated with the following equipement. Fiio M15, Shanling M5s, Shanling M3s,Ibasso DX160. IFi Black label amp.

TSMR-4 pros use 2X ED-22689 knowles drivers for the highs and super highs. And the 2X CI-22955 knowles for bass and mids. I noticed an immediate increase in stage vs the TSMR-3pros. Also the shape of the stange now sounds more traditional vs the taller sound of the 3pros. Meaning the sound stage now has a side ways oval shape to it and not so much side ways rectangular in how the stage is perceived like the TSMR-3 pro and with a more boxy stage of the TSMR-2.

Utilizing 3 crossovers and 12 components to keep each part of the sound in check the TSMR-4pro tuning is balanced with an increase in dynamics from their previous in ears;
TSMR-3Pro blue.. TSMR-4Pro red

The jump from the TSMR-3 pro to the 4 pro while not drastic sonically I can now perceive some additional sonic enhancements in the way of a punchier slightly deeper bass line and the treble now has a bit more in the way of extension. The TSMR-4 pro now has even a more complete sound vs the previous 3 pro model and needless to say is one of the better implemented all BA in ears in the price range.

The 3 switches works as follows, there are 3 switches represented with a 1,2,3 label and each switch has an influence in tuning the 4 pro to your liking. 1 is a bass switch 2 balances out the frequencies 3 is for treble enhancement. To be honest tuning switches feels a bit hokey to me. I mean do they really have an effect? The quick answer to that is yes it does. But not exactly like using a well implemented EQ. The switches on the TSMR models all have minor effects on the sonics with nothing really drastic. We are talking 2-3dbs here and there. So if you're expecting bass head levels of bass just by flicking a switch you're not going to get that but what you do get is more emphasis, a bit more impact, slightly more rumble which in turn adds a bit more warmth to the lower registers. It will not change the base sound to something completely different. But for what is on there. It is fun to mess around with the switches to get the sound to your liking.

TSMR earphones all come to you with the number 2 switch turned up for the balanced tuning. Which makes sense as all these have a solid balanced foundation for the sound. Flick the bass switch and you're ready to go outside. That added 3 dbs of increased mid bass helps drown out external noise. Isolation of the 4Pros are excellent as are all the TSMR in ears. In fact for commuting and being outdoors. The TSMR earphones are perfectly suited for it because of the great passive isolation with the sound on tap. 26dbs according to specs actually.

There are some similarities to the TSMR-3 pros but that added treble BA makes the TSMR-4 have a bit more transparency with an added bump in sonic details. Sound stage I feel is the main difference between the TSMR-3pro and the TSMR-4 pros.

Treble has greater extension vs the TSMR-3pro. But in no way does this make the TSMR-3 pro sound dull or lacking. The extra treble BA makes the TSMR-4 reach a bit further in the treble region and adds a touch of extra clarity to the sonics of the 4 pro. Upper mids bump is in the 2.5Khz range which results in good clean imaging and has an excellent detailed, dimensional mid range.

As noted earlier the one aspect that I appreciate about BA designs is their uncanny ability to have dimensions or better layering to what you’re hearing. The 4 pros is a fine example of just this. Imaging in the mids on these are another stand out feature of the 4 pros and while I have heard better but will cost much more for a slight gain in the region, for what you're getting in the price range you really can’t ask for better. The mids come at you with very good imaging and precision. TSMR earphones all come with excellent ideal mid ranges which seems to be another constant with the tuning on these earphones. With the 1 switch on it does add a slight bit of warmth to the lower mids which does not detract from the very good mid bands the phones have. Some might like it that way. Again it all comes down to how you like your slight tuning variations.

I appreciate that we are able to flick and switch to add some needed oomph when you're in the mood. I feel with the balanced switch on. Number 2 switch on gives a well balanced presentation of the sonics on the 4 Pros. While not really bass head levels like mentioned earlier the 1 switch on modern genres like pop and EDM and hiphop is well represented. Much like how bass is represented in the previous in ears. The 4 pro sub bass is heard but not felt like a full bored dynamic. But for what is there it represents some of the better bass performance for an all BA set.

The least effective out of the switches is the number 3 switch. Which gives a very minor bump in the lower treble region. I doubt folks will be able to perceive any real difference with the switches on or off. It is very negligible and only has a very minimal effect here. Since the treble of the 4 pro is tuned with excellent clarity and detail. This switch is really a miss as there is almost no need for it.
TSMR-4pro with aftermarket copper alloy cable.

In conclusion the TSMR-4pro has a jack of all trades type tuning and has a very versatile sound signature that will become a fan favorite. The full range sonics are represented with great ability, excellent dimensional sonic flavor with a very nicely balanced tuned foundation. Competition is fierce in the price but if you are a fan of BA timbre, detail, dimensional sound. The TSMR-4 pros are compelling. These are a fine example of what you can expect at the price range for an excellent all BA in ears. Thanks for taking time to read. Keep safe and happy listening always.
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Including the size of shells and nozzle?
how large is the nozzle on 4 pro sir? 6.5 for the b2. too large for me.
Shells are smaller than the H40 with a longer nozzle. It has a great universal shell. Should be comfy and they will isolate much better as well. If your asking how wide the nozzle is. It looks to be about 4.5mm roughly.
Pros: Sound and build quality
Detailed sound (Good amount of micro-details)
Good attention to detail and QC
Customization options
Cons: None really
My background- I am a professional musician, producer and audio engineer with experience in the performing, recording and pro-audio industry. I test products on a technical and musical level and try to write reviews as simple as possible from a music fan's perspective.

Disclaimer – The sample was sent to me to test and review. I am not affiliated with the company or the seller in any way and write this review with my unbiased opinion regardless of how the review turns out.

Genre preferences- I majorly listen to rock, acoustic, pop and metal genres and occasionally checkout EDM music which is doing the rounds on the radio and charts.

  1. Driver - 4 Balanced Armatures (2 x Knowles 22955 & 2 x Knowles 29689)
  2. Impedance - 15ohm
  3. Sensitivity - 115dBL/mW
  4. Frequency range - 15Hz-20KHz
  5. Passive noise reduction - 26dB
  6. Connector - 2-pin 0.78mm
I was sent just the IEMs. I do not know how the packaging looks or the accessories that will be in the box. So for that matter, I've left out the 'In The Box' section of this review purposefully.

Build Quality, Fit and Comfort – The universal shells of the whole TSMR line up are the same. The shells are made from resin and are stunning to look at. There are innumerable customization options where sky is the limit. The shells are extremely well made and you can clearly see that the attention to detail is top notch.

Fit, like previous TSMRs I’ve tested is very comfortable and snugness primarily depends on the choice of ear tips. The shells aren’t like the semi-custom shape that you see a lot of companies using but they still provide similar isolation from outside noise. I’ve used them while travelling by public transport and never knew what was happening around me while listening to songs. Also, the nozzles aren’t intrusive and remain comfortable over long sessions.

1.jpg 2.jpg 3.jpg
Pictured case and cable not included in the package. This Tanchjim upgrade cable was used for testing.

Sound – This is the 3rd IEM from Tansio Mirai that I have tested. I really dug the TSMR-3 when I first got it around 7 months back and it got me particularly interested in the brand. I stalked their Taobao store and drooled over all the customization options they had. I then got the lucky opportunity of trying out the updated version of TSMR-3, the 3Pro. It brought in refinements that I felt really improved their 3 driver config. Now lets see what the 4 Pro has in stock for us.

Since I like Mode 100 the most, I’m going to use that for comparison.

Bass – My friends and I, who own the TSMR-3 always wished for a little more sub-bass. 3 Pro refined it but it is the 4Pro which ultimately sorts it out. The sub-bass is more refined and it can be heard better in songs with 808s and good natural electric bass. It’s far from basshead levels of boosted bass quantity but it’s there to help you feel the depth of the low end. The overall quantity of bass too is felt 'slightly' more in 4Pro. Bass as a whole is still neutral, in control, tight and has good fast decay.

Mids – The lower mids are similar to 3Pro but feel slightly cleaner and more musical. Upper mids have the trademark Tansio character. It maintains the natural tonality of the instruments but gives electric guitars and snares a bit more sheen and sparkle to keep the music exciting. The resolution and separation in the mids is better than its predecessor and as a result you hear more micro-details. Vocals sound forward and commanding, acoustic instruments when panned wide have good tonality & presence, and kick & snare have good body and stick attack. 4Pro's resolution helps me focus on the depth of snares and the individualistic tonality of different snares in different songs.

Treble- All TSMRs I've tested have been IEMs driven by detailed higher mids and clear treble and 4 Pro is no different. The treble in 4Pro is sparkly, clean and clear (no pun intended). It has good amount of resolution. It particularly lends good sheen to orchestral instruments and acoustic guitars. You can hear separation between strings in an acoustic instrument or the tonal character of an instrument which gives it its individuality, obsessively, if you want to. One thing I really like is that Tansio Mirai keeps the 6.5-8kHz sibilance region in check. So you can keep listening to vocals for a long time without them getting intrusive or harsh.

Soundstage, Imaging and Separation- 4Pro’s soundstage is wide. It is certainly my favorite out of the TSMR units that I’ve tested. Instruments are placed very well and quite accurately. Separation across the frequency range is quite good and along with the good soundstage helps portray a better sense of space.


TSMR- 4 Pro vs 3 Pro ($220)

3Pro (Green) vs 4Pro (Yellow).png
4Pro in Balanced Mode 020 (Yellow) & 3Pro in Bass Enhanced Mode 100 (Green)

FYI, I like both of them very much. I’m not the one to praise a new product from the company just because it is new. I’m going to lay down all the parameters that I noticed while comparing both. It is for you to choose which one will work for you and for that, here are some noticeable differences.
  1. 4Pro has better separation & resolution and as a result you hear more micro-details. You can hear reverb trails in slightly better detail as compared to 3Pro. This also gives you a better sense of the room and atmosphere in the song.
  2. On the other hand, 3Pro has a slightly warmer character relatively and is smoother.
  3. 4Pro technically has more bass presence than 3Pro in 100 Mode. But because 4Pro has better and more detailed treble extension as compared to 3Pro, even if it has more bass, the treble detail shines through and takes away the perceivability of more bass in 4Pro in real world tests.
  4. 4Pro in Balanced Mode 020 and 3Pro in Bass Enhanced Mode 100 have nearly identical bass performance and you can see that in the graph above.
  5. 4Pro has more clarity in the high bass and lower mids and that is because of a smoother curve descent in that region.

TSMR-4 Pro vs Shozy & Neo BG ($279) - I like the Shozy BG. It plays most parts well musically and safely. But sometimes you don't wanna play safe and need more excitement. That's what 4Pro does. BG's bass is well rounded but 4Pro's bass has more attack and can hit harder. BG's midrange is of the thinner kind whereas 4Pro's sounds slightly fuller yet detailed. BG's treble is smooth whereas 4Pro's treble is exciting and more detailed.

TSMR-4 Pro vs LZ A6 ($310) - A6 and 4Pro have nothing in common. A6 is energetically tuned whereas 4Pro is towards neutral with better balance and sync between the frequency bands. A6 has a lot of filter options whereas 4Pro has 3 tuning switches. 4Pro's bass is more accurate. A6's midrange is slightly recessed whereas 4Pro's is towards a neutral presentation. A6's treble is boosted and has a lot more energy whereas 4Pro's treble is more accurate while still equalling on detail and clarity. A6's tuning insults badly recorded songs while smacking them in the head, whereas 4Pro portrays them in a more accurate, easy and balanced way.

Conclusion – For me, 4Pro is another hit from the brand Tansio Mirai. It sounds detailed, rich and very well balanced. With excellent build quality, 3 tuning switches, detailed sound and unlimited customization options, TSMR-4Pro is a no brainer and an easy recommendation. Recommended, check it out!

Testing Rig-
  1. Universal Audio Apollo & Focusrite Clarett 8PreX audio interfaces.
  2. Playback - Logic Pro X session (with hi-res tracks mentioned below), in order to use plugins to isolate dominant frequencies & frequency bands, check imaging, normalise levels precisely using dbFS meters in order to compare different IEMs with different impedances, etc.
  3. LG V40 and Oneplus 7 Pro phones for casual listening.
YMMV slightly with different setups. So tread cautiously. Haha :wink:

Reference Songs list-
  1. Foo Fighters- The Pretender, Best of you & Everlong
  2. Coldplay- Paradise, Up in flames & Everlong
  3. Ed Sheeran- Thinking out loud, Bloodstream & Galway Girl
  4. Chainsmokers – Somebody, Sickboy, This Feeling & Closer
  5. John Mayer- Slow dancing in a burning room, Stop this Train & Say
  6. Gavin James- Always & Hearts on fire
  7. Switchfoot- Meant to live & Dare you to move
  8. Linkin Park- Papercut, One step closer & Somewhere I belong
  9. Maroon 5- She will be loved, Payphone & Lost stars
  10. Lifehouse- All in all & Come back down
  11. Karnivool- Simple boy & Goliath
  12. Dead Letter Circus- Real you
  13. I Am Giant- Purple heart, City limits & Transmission
  14. Muse - Panic station
  15. James Bay - Hold back the river
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great review, thanks!
whats the nozzle size, i saw blessing 2 with 6.5, too large for me, hope this ones smaller.
@listener26 Hey! It is 4.5-5mm if I remember correctly.