[rukind2]

I'm curious to know what folks have to say about custom IEM's made of acrylic vs silicone. What are advantages and disadvantages of either material?

 

[westsider]

Your question may already be answered in this thread.
http://www.head-fi.org/t/537437/acrylic-vs-silicon-housing-for-custom-iem

 

[Kunlun]

Both can be good. I talk a little about them in my review for the silicone-shelled Sensaphonics 3MAX (link at the bottom of my post).