RE-252: Pain and Pleasure combined

Warning: The usual disclaimer holds. Sound is very subjective and I am still learning to associate terms with what I hear. Judging by Head-fi standards, I am not qualified to write a review. But, why do I even attempt it? Because I want to share what’s on my mind about the IEMs – some of them not widespread or popular here. What I’ll try to do is to present facts as I see and hear. YMMV, so take everything with a bucketful of salt. Also, impressions on sound tend to change with burn-in – either actual or the brain adaptation.

Introduction: I’ve always been fascinated by the “house sound†of Head-direct. They err on the side of neutral, something I very much like. I’ve been chasing RE-252 for a long time than I’ve cared to admit in forums. So, when audio, availability and affordability clashed, they formed the true axis of evil for my wallet … yet again!

Photos:

From Left to Right: The Packing, The “Dust Magnet†View 1, The “Dust Magnet†View 2, The Cables (from Left to Right – Sony earbuds, RE-252, Xears TD100-I), The RE-252 Cable





Specifications
:



  • Driver Diameter: 9mm
  • Impedence: 16 Ohm
  • Sensitivity: 103 db/ mw
  • Rate Input: 2 mw; Maximium Input: 15mw
  • Frequency Response: 16 Hz to 22kHz



The Outside – Looks, Packing, External factors

Accessories & Packing: Accessories include 3 sizes of single flange, two sizes of clear double flange, a shirt clip, 10 replacement filters in a HiFiMan box similar to the one from RE0. Nothing unusual or out of the ordinary to be excited about.

First looks: Faheem said that he opened it up, tested to see if they are DOA and packed them again. I could still spot a few specks of dust when they arrived in layers of packing. On first touch, these were a little soft. So, this is what a “gummy†is.

Cables: I am not very fond of Head-direct cables thus far (I own only RE0 and 252). I am yet to see a CK10, but it’s not unfair to demand better cables at this price range. Now, look closely in the 4th image – Which one do you think has the thicker cable? The [FONT=&quot]Rs. [/FONT]1400 Sony, [FONT=&quot]€[/FONT]15 Xears or the $199 RE-252? Decide for yourself.

Fit: I have read pages and pages of struggle with fit. So, before I got mine from Faheem, I tried to meditate early in the morning to calm my mind down. But, I am not the meditating type, can’t describe what I saw when I closed my eyes without getting X-rated. Anyways, next I tried to seek Youtube’s help in finding some ‘rassling’ from the era gone by. I closely observed how to drive a tombstone piledriver properly. And I was prepared….

Alas! The first time I tried the IEMs, they went up snugly into my ears and stayed there. Damn! My preparation has gone into an utter pile of waste. Wrong again! That was just beginner’s luck. As I took them out carefully and tried to do the magical thing once again, it dawned on me that these are worth their notorious reputation. Whenever I tried to pull out, I had to be conscious and careful; after all, these are not cheap earbuds. So, I have to carefully pull the housing and not touch the strain relief.

Build: Why the struggle with fit? Who the hell would think of an odd shaped gummy to house a driver? It’s not like the normal design is broke. If it ain’t broke, why fix it? Anyways, the worse thing is that strain relief also is made of the gummy material. If I was head-direct and I decided to strain your ears this way, I’d have thought of something called a detachable cable.

Tips: I was terrified when changing the tips with the gummies. I mean, what if they suddenly decide to collapse on me when I am pulling out the greatly fit ear tip? Also, due to the construction, these need tips that go deep into the ear. I tried de-cored Shure Olives and the MEE M11+ long single flange. I found them both to irritate a bit. So, I am sticking with the stock large bi-flange until I find something better.

Comfort: Going by reviews and personal opinion from Faheem, these housings should “break in†and get softer in about 20-30 hours of use. I have already tried them for 10 hours. The pain on the outer ear is a lot of bother.

Microphonics: These are as bad as they get. For me, even the shirt clip did not help. Probably because they have been kept packed for a very long time, the cables have lot of memory. The worse thing is the cable from the Y-Split to the strain relief is what causes the most noise. I could avoid walking with these on. But, even when I am sitting at one location and turn my face, I get some microphonics. Hopefully, these too could settle with time.

Isolation: Isolation is decent enough. But, it depends on the fit. For me, the large bi-flanges seal air-tight without a breathing space for the ears (My usual size is Medium). So, I get a decent amount of isolation.

The Inner Part – The Sound

I have over time accumulated about 40-50 tracks covering various genres and some of the tracks are used to test certain traits. This playlist is a work in progress. This is the first IEM I am testing them with.

The playlist begins with some vocal tracks. The first thought that immediately came to my mind was that these sound natural. It was like I was seeing Diana Krall in a large screen watching closely - when she presses her lips, opens them and by how much, Pretty impressive! May be my other IEMs could pick them up too. But, I did not need to put an effort to observe these in the 252, it’s all comfortable.

The Sound Stage is a little strange. I observed depth only in a handful of instances. Most, if not all of the time, it was like somebody decided to stretch the 3-D information into two dimensional space. The sound stage width is slightly wider, but not by much, certainly not as wide as DDM (from memory). It does not have the depth that DBA-02 has. So, in certain songs, positional cues are neatly filled in by the DBAs from front to back. But, 252’s will place them from left to right. When I tried out “On the Run†from DSOTM, I distinctly remember that DDMs placed the runner behind you. Here the runner is closer. But, this is not to say that 252’s lack spatial clues completely. They just don’t do front-to-back right as compared to left-to-right.

Separation is another aspect which I always look for. The separation is very good here like most top-tier IEMs are supposed to be. But, due to the positioning perhaps, I felt that instruments needed a bit more air around them when it comes to Complex passages.

The other good things I observed were Clarity and Balance. Dynamic range, I think are about right. It did not appear to be compressed as with a few other IEMs.

When it comes to frequency response, the first thing you observe is the natural, detailed, lush, well defined mids. You won’t be at fault if you considered them mid-centric after testing only a few tracks. But, these have a very fine balance. The bass goes deep and is natural. It has some rumble too especially as observed in Pink Floyd’s DSOTM track. But, they lack the texture, impact or the quantity that DDMs have. They may be on par with DBA-02, but I am yet to A-B. The treble is detailed enough, but smooth and restrained compared to RE0 and DBA-02. These do have very good speed for a dynamic. BA phones could be hair splittingly fast, but these do not lag behind too much, at least they do far better than RE0.

In overall presentation, I’d say these are pretty balanced in the scheme of things. Bass or treble is never intrusive. But, they seem to have smoothness written all over their signature. As a result, they lack the excitement that DBA-02 and DDM provide for me. They could become boring over long hours of listening.

Due to the low impedance, these do not require an amp. They are very easy to drive straight out of a Clip+ or S9. I find them to be great for low volume listening. I could easily keep the Rockboxed Clip+ at -31 dB and not miss too much. Some IEMs in contrast require a certain volume to shine, irrespective of their rated impedance. Some lose certain characteristics at lower volumes – mids sound muddy / recessed unless you pair them with the right level of amplification. That’s not an issue with RE-252.

Value for Money

If RE0 is the benchmark for the $80 IEM, I’d price these anywhere in the $125 - $150 range, probably $150. If SQ was my main criteria, I’d price them around $170, but the horrible housing and cable makes me deduct $20. I certainly would not pay $199 for them.

Conclusion

RE-252s are my most natural sounding pair to date. They do not overdo anything. But, the main issue is that of fit. Let’s see if I can explain this with an analogy – Imagine yourself in a dark room, with a straight jacket, tied to a pillar and chainsaws running around to cut you on first move. Also imagine Katrina Kaif (or anybody you wish) on a stripper’s pole a few feet in front of you. That would explain RE-252’s build, comfort and SQ aptly.

Ranking in my list

These are indeed an upgrade even over the properly amp-ed RE0, except for the sparkling treble, which is restrained here. Where would I put it? For now, before doing a proper A-B comparison, I’ll place them third in my IEM list right behind DBA-02 and DDM. Would it topple either or both of them over time? Likely, but am not sure. At the end of the day, when you get to “near top-tier†and “top-tier†in a subjective list, your preference for sound signature, presentation and musical preferences rule over any technical prowess an IEM has. Hence, some would place 252 at the top, some won’t.

Is it for ME?

I cannot explain it better than |joker| already did, so here goes – The RE252 is an excellent choice for anyone who tried the RE0 and thought “Hey, I would enjoy these more if they were morerestrained in the treble, more lush in the mids, had more bass, and were reshelled into mutant gummy bearsâ€. I really think they are near the top of the upgrade path for anyone who craves a wide and balanced sound.
 
Hope treble settles down for you (or you get used to it :)). Will wait for your full review.

Though for me, treble never sounded like trouble. But then, I am used to RE0, DBA-02 etc., After getting a bit used to DBA-02, everything else sounds 'polite' or even 'defecient' to me :p
 
^ I still couldn't figure out from your head-fi sig , what new DAC you got. Please shed some light. I am bored of my uDAC and feel the D2000 deserve something better :(.
 
^ It's the same as Brendon - HRT MS2. I am using it in the speaker setup instead of routing through D1. Perhaps because STX and this one uses TI chips (PCM1793 on MS2, PCM1792 on STX), they sound almost similar, which is what I've been hunting for so long. Had a very short session with it. Need plenty of A-B to see if they match / lose to / beat STX.

And if you look closely, you might find another "thing"... and no! I still don't have a swiss bank account ;)
 
Hmmm does the HRT-MS2 have a built in amp / volume control as well or will I need a separate amp to compliment the DAC .Sorry for the n00b query but I really find no time to read up all those awesome write ups and reviews / discussions on head-fi . I miss head-fi :( .Cant wait to get a good phone with mobile internet surfing .
 
After the TF10 incident I don't feel like putting in money into an IEM :( . I anyways do 80% of my listening on D2000 only . For traveling and outdoor use M2 or RE-0 + Icon mobile does the job. Lets see if I come across a good upgrade for a DAC + amp might consider it .Audio GD Fun/ Sparrow looks very tempting !
 
Santhosh, great review as usual. Not only do you get the point across well, your reviews always make interesting reading. Honest and without B.s.
And as I have asked you to do earlier, high time you stopped using the disclaimer! You are very proficient at IEM /HP reviews and you word it very effectively, audiophile lingo or not!
Keep the good work going!
 
You posted this review just 2 days after getting your hands on these. If you notice any improvements or ill effects after burn-in do post about it :p .
 
@Faheem,

I doubt if I'll notice any impact of burn-in. I am so forgetful that I forget my passwords to sites I visit every day sometimes (seriously, not joking!). Doubt if I'd be able to remember the nuances and compare the effects of burn-in. I do believe in tip rolling though.

Secondly, if I like an IEM out of the box, I take that any burn-in side effects like tighter bass, slightly better treble etc., are a "bonus". I typically do burn-in if I don't like the sound out of the box and either the IEMs have rave reviews my ears don't agree with (RE0, HJE-900) or just for the heck of it (Hippo Epic-Sparkle).

But, in spite of all this, if I do notice any significant changes from the review, I'll be sure to update.

BTW, I do have the VB except that their usage is still less than 40 hrs (I think) :p. Since you say so, I'll do a full 100 hrs burn-in sometime later and see if it reduces sibilance.
 
Santosh is talking about forgetfulness. My ears are so ordinary that I couldn't distinguish 100+ hours burnt vb and new one. This is after I thought burnin reduced sibilance. :( Neither could two of my friends and my brother. Ditto with re2 and re0. For my ears burnin doesnt exist.
 
I dunno what to say :S .When I heard the VB for the very first time (Brendon's ) I hated them to the core. They sounded worse than the Hippo Boom I had at that time. A few weeks later Brendon got the VB post burn in and I could definitely notice the reduced sibilance and the magical vanishing act of the extreme unbearable harshness during the first listening session. This time they had turned from worse to something I could place 1-2 levels right below my RE-0 :O.

To testify this later I tried out the same with a brand new VB that I got free with my D2000 and another one which friend owned and was used for more than 5-6 months. Side by side , could easily make out the difference in a blind test with the same ports,source and music .
 
This theory of burn-in is actually based on "driver settling in", which I do believe exists. But that must be a shorter time, IMO. Noticing changes also has to do with lot of observation skills and longer attention spans, which I lack. My ears are naturally rolled off at the higher ranges (16 Khz), so I usually cannot notice if a particular note was there in the 16-19 Khz range. I may be a little handicapped by the combination of all this. So, while I may not believe completely in burn-in, I cannot say it does not exist at all.

Just that sometimes, the theory crosses into the realms of fancy voodoo. Why doesn't my hard disk "burned in" with 1000 hrs of software and actual usage run faster? Does my RAM load 3-4 programs more after 2-3 years of usage? Does my battery which provides 3.5 hrs backup initially, give 15 hrs of backup or just dies after 3 years? Why does this concept work with all things related to music alone?

I also doubt if many people clearly, without a shadow of a doubt remember how the headphone / IEM sounded out of the box when comparing their impressions after 3-5 years of living with it and 1000 hrs+ of usage. Is it the brain burning in, accepting the headphones and as a result noticing something positive? Or is it really that drivers suddenly woke up from their sleep and decided to transmit sound in a different manner after 1000 hrs? Probably, a blind test with a new IEM and an old IEM burned-in for X hours could tell us, like Faheem did! But, I doubt if I can pick that up!

If some change does occur contradictory to my views, I'll have no choice but to accept grudgingly (at least in that particular case). Till then..... :p

Edit: I loved the VB out of the box. The bass was so good that I mentally EQ-ed the sibilance frequencies ;)
 
FaH33m said:
I dunno what to say :S .When I heard the VB for the very first time (Brendon's ) I hated them to the core. They sounded worse than the Hippo Boom I had at that time. A few weeks later Brendon got the VB post burn in and I could definitely notice the reduced sibilance and the magical vanishing act of the extreme unbearable harshness during the first listening session. This time they had turned from worse to something I could place 1-2 levels right below my RE-0 :O.

To testify this later I tried out the same with a brand new VB that I got free with my D2000 and another one which friend owned and was used for more than 5-6 months. Side by side , could easily make out the difference in a blind test with the same ports,source and music .

You could find a difference, as your ears are definitely far better than me. I couldn't. Actually, I am contemplating whether I should buy higher end audio gear or not. I don't think, my ears could really find a difference between 100$ iem and a 300$ iem, apart from difference in sound signature. That way I would atleast save lot's of money. :)

I am also not suggesting burn-in doesn't exist. Almost all reviewsrs do burn-in and tell the differences they found with burn-in. So it does exist, my ears aren't good enough to detect those differences. I was very shocked to find both burnt and new hippo vbs same, as I am really very sensitive to sibilance. None of my friends find hippo vb sibilant and actually that's their favourite IEM, ahead of RE0. 3 of my friends have hippo vb!
 
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