Arysyn
100+ Head-Fier
Firstly for me graphs mean nothing, I take no notice of them and rely on my own ears, I understand people who do value them but I would personally never let a chart dictate what I buy.
The Sennheiser IE800/s models to me have no upper treble issues but then I don’t think the Flares Pro’s have upped treble issues either. I understand you don’t like the upper treble of the Pro but you write as if Flare deliberately tuned them this way, again to my ears they don’t have this issue.
Now to the differences between the IE800 and the newer S version - the S for me is more refined than the older model, bass still cuts deep with nice texture but the mids and high are so fluid and natural sounding. The old IE800 may have had a slight V signature but the S version doesn’t to these ears.
Now in comparasion to the Pro/Gold.
In some respects the IE800 and the Pro’s were quite similar in terms of their bass response but I found the treble response and depth better on the older Sennheiser. The S version to me was a better earphone than the Pro, just everything bar the amount of bass was better, hence me selling the Pro’s at that time.
I probably need more time to compare the Golds and the IE800s but my early impressions are that the golds are a definite step up from the Pro’s. In some respects they are quite similar, both have amazing stage, depth and separation, very similar on both. The bass on the Golds probably hits a bit deeper than the Ie800s and the sub bass is probably more present on the Golds but don’t be deceived by this as it’s also present on the IE800s. I defiantly need more time with them though as these are very early impressions.
I've just listened to that Enigma track on the Pro's and its certainly not harsh to me (using a high end desktop system, audiophile tips). That percussion they're using is all sampled though, I can tell easily on these, and its not particularly realistic either!
You may just have a sensitivity to that frequency range, I've not heard any harshness on the Pro's at all, but realise we all hear differently and have our own preferences.
Did you ever experiment with different tips on the Pro's, not just the Flare Audio ones? Some tips will certainly tame that peak at ca. 9khz though I've not got any measurements to prove it. Certainly it sounds that way to me. The normal Comply T200's work quite well for that, but I prefer the Audiphile ones overall at the moment.
Some people notice the harshness while others don't. It certainly isn't so bad there is screeching noise as I've noticed a bit in the treble of the Ortofon EQ8. However, it produces a metallic sound during specific sections of ROB in the latter half. I noticed this on the Pro probably more because I don't hear it on most other iems, rather than it being because of any apparent defect of the Pro.
The other thing is that the FlaresPro just sound so damn good in every other way, and with most non - heavier treble tuned, maybe songs with heavier sampled percussion or whatever is about the few songs I've noticed this on, seems to cause this glare from the FlaresPro. Its as if the FP is bringing out music in the treble (I'm fairly convinced its in the upper treble region), making it more forward. Flare's sound generally seems more forward overall, which is great for vocals and lower treble detail, but not upper treble.
I know not everyone is as reliant on fr graphs as I am, but they do help to give a general idea about the product. I'm going to find the graph of the R2 and post it here, along with the FlaresPro again, for a comparative visual example to what I'm about to mention. The R2 and the FlaresPro essentially are very similar in the bass and mids, with the exception of improvements in those areas on the FP, but no major tuning differences. The similarities stop when it gets to the treble. The FP has a neutral treble throughout, with the extended upper treble bump, while the R2 goes for lesser treble below neutral pretty much all the way through. By the way, is this what people here mean by "Rolled-Off Treble"?
My suggestion for Flare would be to work on extending the lower treble , while neutralizing the middle of the treble and upper treble. Its true that I write about Flare purposely tuning the upper treble the way it is on the FP. That is because, for one, its quite vastly different from the R2 line. Then the question of "Why"? is there, which to that there is Flare's advertising of their "Live Sound" Approach. When I got more familiar with EQ, I was able to learn more in my hearing to match all the online research I've done in learning more about audio, and atmospherically the upper treble region is a big part in that. This, also confirmed by the fr graph Flare sent to me showing the upper treble bump.
The lower treble can also help with this, but to a lesser extent. The lower treble is more details than space, but still can add some sense of space by use of careful tuning particularly in the latter part of the lower treble. I've noticed in most iems trying to create space, its done by recessing the mids and giving the sound that V-Shape I despise so much. Yet, Flare doesn't do this. Instead, they follow a more neutral/forward approach, which I really like and I greatly appreciate Flare Audio for doing. If only they kept that throughout the treble.
In my usage, I had my Spinfit Twinblade eartips I know did not have any negative effect on the sound of the FP. Using them and my main portable dac source, the Meridian Explorer2, sounds fine with the Grado iems I have, the Massdrop HiFiMan RE00 also. However, the problem exists on the FlaresPro, regardless of portable dac either, as ithad the issue while using the Zorloo Zuperdac (1st model,), along with more bass. Also, I've since spent some time reading about the ZZ's higher output impedance and its effects on bass while listening to a Dynamic Driver iem.
I don't have any desktop amplifiers or dacs, since everything in audio I have needs to be portable for my usage. Still, I really like the Meridian Explorer2 I have.
The R2Pro, from : https://www.head-fi.org/threads/flare-audio-r2pro-kickstarter-campaign.766183/page-124