Next, Sound Quality. None of the feature is worth looking at if the sound cannot meet your standards. In my opinion, I find that the sound of the Crusher ANC & WH-XB900N is catered to a very dedicated group of music listeners. Those who like serious bass response and feel heavy thumps of it in their ears. The Sony's do the job better even though in comparison the Skullcandy's have way more bass. This is due to the headphones' ability to separate the mids and highs more so than the Skullcandy’s. With the bass slider on the Crusher's all the way up, every other detail from treble, vocals to instruments are lost. However, with the bass slider at a reasonable level, the Skullcandy sound really good after doing the sound personalisation in the Skullcandy app. While with the Sony's at +10 level, the sound is still clean, and everything stay as bright and forward. So, the SONY WH-XB900N is better if you value realistic and clean sound. But if you here for ultimate head-rattling bass, then the SKULLCANDY CRUSHER ANC is the right way to go.