The ULTRASONE DJ1 PRO headphones are geared for professional DJ applications where their sealed-back construction will help to attenuate distracting ambient noise. The accentuated upper frequencies of the DJ1 Pro may prove especially beneficial to DJs seeking to keep on top of of hi-hat & cymbal cues or track their scratch/mixing synchronicity while working multiple turntables or mixing sources. Their full bass response helps to approximate the deep bass of dance music or hip-hop production styles. The mid-range response is perhaps just slightly recessed which gives the overall sound a hint of discontinuity that serves to emphasize the lower and upper parts of the sound spectrum. The seal from external noise is good, making these excellent headphones and a good choice for club DJs.