OP
- Thread Starter
- #21
The ER4 SR is a superb product, I love mine. That said, the deep fit isn't for everyone. I use them for flying as aside from their very good, neutral sound quality they have tremendous passive noise isolation. I replaced some Sony 1000X wireless noise cancelling headphones with the Etymotics and find they are just as good for isolating noise, if anything they're better as they attenuate voices more effectively.