Received a pair of Spin Fit tips a few days ago stuffed some foam in there and seems to be working so far. A few personal impressions regarding sound/comfort, so with deep deep insertion they are a little uncomfortable but this is certainly the best I've heard them at the bass does bleed a bit more but due to the pronounced treble it actually balances things out quite nicely. I feel like there is a touch more clarity to the sound and definitely a little more depth.
 
I certainly won't be going back to Comply's but haven't found a permanent solution as of yet just wondering if with a good ear tip and this handy bit of kit http://www.decibullz.com/shop/custom-earphone-adapters/decibullz-custom-molded-earphone-adapters/ theres a chance of better comfort isolation and sound. 

 
Here is nice and fun reversible mod to make R2A sounds more like the R2PROs... 
As people already mentioned, they are very close in terms of how they sound to begin with. 
To me, I felt there were about 5-10% differences (mostly sound-stage shape and bass quantity)
This mod eliminates those 5-10% gap and may even surpass by few % margin.
 
Bold claim isn't it? I do have a flame suit on and ready!
 
Ok here is what you need:
1. O-Ring (same diameter as the original ones) 
2. Blu-Tack 
3. Steady hands
 
Just like any mods, be careful, YMMV and don't proceed if you are perfectly happy how your R2As sounding right now. 
 
Walk away if you find the Trinity Delta sounding much better for your musical taste. (I sold the Delta 3 days after I got em)  
 
How:
1. unscrew the metal cap
2. put O-ring (do not touch the existing one unless you have bass imbalance issue)
3. roll two very small equal amounts of Blu-Tack and place them in the center of the O-ring
4. tighten metal cap screw until it stops (applying same torque is the key point here) 
5. check for channel imbalance / centre imaging with vocal tracks (if you do, Blu-Tack was not set properly and one might be bigger than others)  
 
What it does to my ears:
1. Perceivable treble energy increases 
2. Reduces bass bloom and make it tighter and better controlled (bass still extends low as before)
3. Mids are less thick and slightly drier sounding - leads to more vivid and clean sound
4. Increases sound-stage depth
5. Slightly decreases sound-stage width 
6. noticeably better forward projection
7. slightly better focus and centre imaging since hazy room reverberation like resonances are gone
 
Enjoy!

tgx78 said:

  Here is nice and fun reversible mod to make R2A sounds more like the R2PROs...

Click to expand...

 
Great work, and coincides with Idsy's findings. Out of curiosity, have you tried the second O-ring without blutack and if so, what was the difference?

james444 said:

   
Great work, and coincides with Idsy's findings. Out of curiosity, have you tried the second O-ring without blutack and if so, what was the difference?

Click to expand...

 
Yes I tried it without blu-tack and it made a horrible hollow sound with weird souning bass.
I feel there is certain level of air volume required inside back and if you exceed it you are loosing the effectiveness of this pressure balanced driver.
I initially put another O-ring just to protect the wire from being crushed by the metal cap.   

tgx78 said:

  I feel there is certain level of air volume required inside back and if you exceed it you are loosing the effectiveness of this pressure balanced driver.
I initially put another O-ring just to protect the wire from being crushed by the metal cap.   

Click to expand...

 
So there's still some air left between the blutack and driver? That's why I asked, because one can't tell that from the pictures. I agree, there needs to be some back volume or else bass may roll off quite severely.

james444 said:

   
So there's still some air left between the blutack and driver? That's why I asked, because one can't tell that from the pictures. I agree, there needs to be some back volume or else bass may roll off quite severely.

Click to expand...

 

 
Yes, there should be some air left there still. 

james444 said:

Preferences vary, but the only way my R2PROs sound like top-tiers is with fully sealed caps. However, be aware that the cable sheaths may get damaged by screwing the caps all the way down

Click to expand...

 
They are fully sealed as soon as you go up against the cable and start to squash it.
 
What you mean is with the cap done all the way up with minimum space behind the driver?

james444 said:

   
Great work, and coincides with Idsy's findings. Out of curiosity, have you tried the second O-ring without blutack and if so, what was the difference?

Click to expand...

 
I don't understand this. Are you sure it coincides with Idsy's findings?
 
He was saying that his THEORY - not findings - was that the only difference between the R2A and R2Pro is about how far the end cap does up, he thinking that there is a difference in the thread depth inside the housing.
 
I showed this to be completely false - both housings are exactly the same!   Therefore the gap behind the driver is exactly the same in both models. Sound differences are to be found elsewhere.
 
I don't want to insult anyone but the lack of logic and completely anti-scientific thinking on this is astounding! Then it's followed by the good old "ignore the facts which cast doubt on the theory and just repeat repeat repeat until it's true! " of quackery.

idsynchrono_24 said:

Yes, James' internal thread theory is what I was hinting at. I screwed the R2Pro cap onto the R2A to highlight that the difference wasn't in the end cap, but rather perhaps the internals of the housing instead. Here's a shot of the R2A and R2Pro lined up. You can see that the dimensions of the housings are exactly the same (same length/width). One cap screws in quite flush with the housing (Pro) while one has a clear and visible gap (R2A)



Sorry for the crummy pics. No macro mode on iPhone :l

Click to expand...

 
If he were simply to LOOK at the internals of the housing, he'd see that the theory is false - the thread in the housing on my to models are exactly the same in that they continue far past the driver - the end cap hits the cable and washer before any end-stop.

luckynat said:

I don't want to insult anyone but the lack of logic and completely anti-scientific thinking on this is astounding! Then it's followed by the good old "ignore the facts which cast doubt on the theory and just repeat repeat repeat until it's true! " of quackery.

Click to expand...

If you don't want to insult anyone then please don't go on and do just that.

May I ask, what's your experience with IEMs beyond the Flares and the things you posted in this thread?

james444 said:

   
As I posted earlier, I tried SpinFits and all they do is roll off treble above 9kHz. The Flare's treble peaks are in the range from 6 to 8kHz, so they're not affected.
 
Better use alternate tips (e.g. Sony hybrids) that don't roll off treble and combine them with the teabag mod. This will give you fairly smooth and well-extended treble with silicone tips.
 
 
Preferences vary, but the only way my R2PROs sound like top-tiers is with fully sealed caps. However, be aware that the cable sheaths may get damaged by screwing the caps all the way down.

Click to expand...

Oh thank you james444, the teabag mod works!
 
An elegant solution!

james444 said:

If you don't want to insult anyone then please don't go on and do just that.

May I ask, what's your experience with IEMs beyond the Flares and the things you posted in this thread?

Click to expand...

 
Don't be insulted, just keep the enthusiasm for an idea, a theory under check.
 
May I ask what your experience is with scientific experimentation and the necessary, practiced thought processes one has to go through to test a theory?  
 
This is NOT the same as listening to hundreds of pairs of earphones and transcribing your feelings of what you thought your senses were telling you. My experience of iems is relatively small (various pro iem/ceims like ASC, shopping around for personal iems and settling on Shure 530s years ago, shopping around more recently and coming across the Flares) and actually that helps in a situation like this because I can see things afresh without old baggage.
 
I imagine reviewing iems and being forced to come across with an opinion means you are used to making choices on which side of a fence to fall else people won't bother listening to you. Making a logical assessment of what is going on with these Flares requires the exact opposite of that mindset - sitting on the fence until all the info is in is what we want.
 
As I said, my photos and experience of my two pairs completely go against Idsy's initial thoughts and I guess I'm waiting for him to reply, perhaps say what his look like on the inside of the housing. Seeing as my photos and experience go against the theory, I don't see how you can keep repeating it with any seriousness.
 
The R2A and R2Pro housings, end cap and gap behind the drivers are the same in both cases according to my two pairs.

@james444, I think that you are going to be very pleased when the Ostry tips arrive. The construction of these is very good with thick hard stems and quite firm earpieces. It is the opposite approach of the SpinFits; these are solid. Of course, it is a personal thing but the large tips are fitting my ears really well. Bass quantity is comparable to the Complys - and I know this because I did some listening with a Comply in one ear and each of the three types successively in the other.
 
Anyone who gets these should definitely get all three types which is also a good deal. (The more you spend, the more you save. ) I had assumed that I would only actually be interested in the OS100 that have the highest clarity but it is not so black and white. The OS100 are actually a bit brighter than the Complys. They sound good and may be a good choice for many people. The OS200 really sound on par with the Complys. The OS300 are okay too, not that different than the OS200, but the sound starts to sound a bit dark and even just a tiny bit muffled. I also thought that the OS300 might even have a touch more bass than the Complys if that is possible.
 
For now, I am listening to the OS200 and while it is very early, I think that they are the best silicon tips with the R2PRO yet. I will still give a slight nod overall to the Complys, especially because I can rock my music and they stay perfectly in place. But these are holding in my ears quite well. Like I said, I have been blessed with an excellent fit on the large.
 
SQ-wise they are very close to the Complys. They sound great. The Complys do isolate better.
 
Again, all early days.
 
Here they are. The red OS200 are firmly planted in my ears. 
 
 

It is interesting reading the Chinese on the Ostry packages. The OS100, OS200 and OS300 are described respectively as:

Bass: quantity light, quantity enough, quantity lots

Dental: correction medium, correction comparatively strong, correction very strong

tgx78 said:

Here is nice and fun reversible mod to make R2A sounds more like the R2PROs... 
As people already mentioned, they are very close in terms of how they sound to begin with. 
To me, I felt there were about 5-10% differences (mostly sound-stage shape and bass quantity)
This mod eliminates those 5-10% gap and may even surpass by few % margin.

Bold claim isn't it? I do have a flame suit on and ready!

Ok here is what you need:
1. O-Ring (same diameter as the original ones) 
2. Blu-Tack 
3. Steady hands

Just like any mods, be careful, YMMV and don't proceed if you are perfectly happy how your R2As sounding right now. 

Walk away if you find the Trinity Delta sounding much better for your musical taste. (I sold the Delta 3 days after I got em)  

How:
1. unscrew the metal cap
2. put O-ring (do not touch the existing one unless you have bass imbalance issue)
3. roll two very small equal amounts of Blu-Tack and place them in the center of the O-ring
4. tighten metal cap screw until it stops (applying same torque is the key point here) 
5. check for channel imbalance / centre imaging with vocal tracks (if you do, Blu-Tack was not set properly and one might be bigger than others)  

What it does to my ears:
1. Perceivable treble energy increases 
2. Reduces bass bloom and make it tighter and better controlled (bass still extends low as before)
3. Mids are less thick and slightly drier sounding - leads to more vivid and clean sound
4. Increases sound-stage depth
5. Slightly decreases sound-stage width 
6. noticeably better forward projection
7. slightly better focus and centre imaging since hazy room reverberation like resonances are gone

Enjoy!

Click to expand...

Nice work! So the A and Pro sound virtually identical or now the A pulls ahead to your ears?