Originally Posted by
bocastephen
Etymotic are noise isolating, not noise canceling - there is a significant difference, especially as the fit/seal of the earbud in a noise isolating set will determine the overall effect. The best option is a noise canceling earbud with a good seal to add isolation.
I am aware of the difference between noise cancelling and noise isolating equipment - but I disagree with you on the "best option" NC earbuds are (IMO) snake oil. If you get up to 40db isolation what else is left to cancel? Meanwhile NC exerts pressure and deteriorate SQ.