OVERVIEW: [ DESIGNED FOR DJS & AUDIOPHILES ] A71 could produce a sound penetrating every corner to present music the best, and making pop music more vivid and rock music more dynamic. Powerful bass, clear vocal, and crisp high tones form stereo hi-fi sound. The 40mm bionic large dynamic driver ensures clear mid-high range and deep bass, filters excessive sound coloration, reproduces the true nature of song and brings strong bass.