Except for the in-line remote, which feels a bit flimsy, the rest of the headphone has an even and decent build quality. LEARN ABOUT BUILD QUALITY 9.2 Breathability Avg.Temp.Difference 0.8 °C Cable Detachable Yes Length 5.42 ft Connection 1/8" TRRS The AKG K391-NC come wit...
There is no single number that can denote noise-cancelling ability. As you can see from the charts below, aheadphone’s performance isn’t the same across all frequencies. We wanted to give you an general idea what we were talking about, though. This uses the greatest drop in noise below...