Originally Posted by
waflyboy
I used the Pro-X (first generation) on the E-175, and found the noise cancellation to be sufficient. It's not as quiet as the A20, but a bit more compact and lightweight. Then I moved on to the 737 and found the noise to be a bit much for the Pro-X. I started using the A20 and am much happier.
Maybe the Pro-X2 has better noise cancellation?
Noise cancelling should be the same. A custom ear mold will prob be the the only way to make it quieter