Etymotic hf2 and er4's.
Aug 28, 2010 at 6:40 PM Thread Starter Post #1 of 1

shiftywxm

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Hello all,
 
Is anyone able to tell me if the hf2's and er4's are the same size barrel wise?
 
I have custom moulds for the hf2 and am considering upgrading to the er4's, but don't really want to pay out for new moulds if I can help it.
 
Thanks,
 
Colin
 

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