Very interesting comparison astroid. I'll add some of my own comments below.
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Originally Posted by astroid /img/forum/go_quote.gif
The sound could be described as similar, the CX95 has a larger soundstage, not just a little either.
On Scott Walkers 'no regrets' the acoustic guitars at the beginning are way out to the left and right on the CX95s , the CX550 reign them in by around a couple of meters.
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I find this observation particularly interesting. For the first thirty or so hours, I found the soundstage to be disjointed, too far to the left and right. Now as I listen, I find the soundstage to be very cohesive, but still plenty wide, at least slightly larger than the RE2.
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Originally Posted by astroid /img/forum/go_quote.gif
The CX550s at the moment seem to be a little less dynamic as well , flatter with smoother peaks.
This may be due to the CX95s having 400+ hrs on them but i suspect the build difference is responsible, the cx550s have a metal back and the plastic is harder as well.
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The lack of abrupt peaks and valleys in the frequency response is something I saw written in a review of the CX95s. Ultimately, it was that comment among others that led me to my purchase of the CX550 (when I assumed they were one and the same). To me, this gives the Senns a very non-fatiguing listen, letting me enjoy the music instead of hyper-analyzing the faults of the earphone.
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Originally Posted by astroid /img/forum/go_quote.gif
The tiny gap between the body of the bud and the metal ring at the end is smaller on the cx550 as well , if this behaves like a port then it may explain the subtle differences in tone (i have used the same tips on both for testing)
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This is somewhat off-topic, but have you noticed the gap being larger on the right than the left? I always thought this was somewhat strange, but I assume this doesn't affect the sound too much. I wonder if it's just a way of determining left from right during the manufacturing process.
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Originally Posted by astroid /img/forum/go_quote.gif
On a positive note the dual flange tips are a great fit and the build quality of the CX550 is better.
I will update in a week but so far i prefer the CX95s.
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Just a quick question: Did you use the same tips on both Senns when testing? I'm sure you did, but just checking.
Well, I must say I'm confused. Either way it doesn't matter to me, since I'm completely content with my CX550 / RE2 combo, at least to the point that any IEM / canalphone I purchase from here on out will merely be out of curiosity and not because I "need" something better.
Please don't quote me!