That's because we use similarly designed acoustic transducers for both headphones. The significant portion of their leakage sits between 300Hz and 20KHz, which is quite a wide range. The DT880 Pro by Beyerdynamic. Analytical sound. They also do not block any noise so they won't be suitable for a lively workplace. The Beyerdynamic DT 880 Pro headphones deliver an accurate, powerful listening experience intended for musicians, sound engineers, and music lovers with stereo systems. This makes the sound of the Treble on these headphones noticeably bright, and they could sound a bit harsh on overly bright tracks. Headfonics. In the Treble Range, they achieve an average of 15dB of reduction which is about average. ships within 48 hours | free shipping within the US, Skip to the beginning of the images gallery,,, Studio headphones for mixing and mastering (semi-open)