Quote:
Originally Posted by MaoDi 
They should sound better than before, clarity should be better as well as soundstage.
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IANAL, but I'm not so sure that this going to always be the case. For one, drivers could get damaged being moved from one IEM to the next. Secondly given that the position of the driver is relative to not just the ear drum, but also to the exit of the sound bores the layout and distances surely would have changed due to the different environment within the custom shell. Both of these could have a negative effect on the sound signature.
With respect to the first point, I am sure UM take the time to test the drivers prior to, and after earpiece construction. Given the information on these forums, I'm sure the guys at UM know what they're doing. But with regards to the second point, I'm of the opinion that re-shelling universal IEMs is taking a bit of a gamble and that you're actual mileage may vary based on various factors such as age of driver, shape of custom shell relative to the generic shell, introduction of new components such as crossovers, or drivers from other earpieces, etc.
Not trying to incite a flame war here, just offering up some points for debate.
