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Originally Posted by Anouk /img/forum/go_quote.gif
Oh I forgot this in my last post but I am also really interested in the differences in housing. I heard from davidmahler that he could not stand the hard accrylic shell of tue ue10 and headphoneaddict really liked the housing on the es3x which i think might be similar to the t1 housing(he also has livewires and freq but prefers the es3x housing).
Greetings, Anouk,
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the ACS products are a full-silicone design. the earpiece is completely made of soft silicone, with the cable permanently sunk into the earpieces. they can take quite a bit of force, from what i've been told -- from a design standpoint i think it's +/- 50lb of force -- so i wouldn't worry too much about the cable being ripped out, necessitating an expensive repair.
most other competing products are made of an acrylic or acrylic-silicone hybrid. i know most manufacturers will add a silicone canal to an acrylic earpiece, or a full-silicone canal with a silicone-coated body (on the part that connects with the ear). personally, i find both designs equally susceptible to damage in road-worn environments (i've seen casing failure in every brand i've had my hands on, in my pro audio work).
casing reliability is, just like any other product, the end result of how the user treats the product, but also luck. i've seen a UE-made earpiece fall off an artist's cord while taking a dive off-stage to crowd surf, and once retrieved from the crowd, it was just like-new in condition; the same type of monitor took a drop off a console and was crushed when the weight of it's own case came down on top of it.
the only product to ever fail while in casual use, for me, was the livewires -- i had one of the first units, and i believe it was a minor (very minor, actually) lab error that resulted in one of the faceplates coming off when i went to remove it from my ear. this in no way, in my opinion, reflects poorly on their build quality, which i believe to be just as high as any product in their class.
comfort-wise, i find that with good fitting by your audiologist, either silicone or acrylic will work out fine. i personally prefer the silicone for comfort's sake, but the difference between a well-fitted acrylic and the silicone is minimal. isolation is a different animal -- the silicone allows for a tighter seal, in my opinion. again, your comfort and fit is more dependent on your fitting and your individual ear anatomy. with top-notch impressions, either should work fine -- it's just a matter of what your budget and your personal preferences on sound signature are.