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Thread Starter 

I came across this video on youtube

 

http://www.youtube.com/watch?v=Rnmwllxh_Xg

 

Basically the guy uses a $10 product which is some mold type thing used as earplugs, but sticks headphones in them while they sit in his ear and stiffen up.  Is this pretty legit?  I don't know much about custom iem's or anything, but I've heard custom significantly increases sound quality.

 

I'm curious to what everyone here thinks.  Discuss...