High quality stereo headphones which reduce overall noise levels by 20 decibels. This redesigned version of our popular isolation headphones features a larger driver for a more powerful low end, cleaner mids and clear highs for a superior sound. Improved padded headband. For live situations or playing along with recorded music at safe sound levels. Reduces outside noise by 20 decibels. 50m/m Dynamic Speaker Mylarcon. Frequency Response: 20HZ - 20kHZ . 1/4” and 1/8” plugs