As the worlds first THX accredited headphones, 1MORE Triple Driver headphones are delighted by music lovers for the vibrant human vocals and clear instrumental audio combined with remarkably balanced sound. Driven by one bass driver consisting of PET aerospace metal layer PET design, a double-tweeter unit protected by durable silicon covers and two metal resonant cavities, these pairs belch out shocking sound with no distortion but high fidelity sound even during sudden volume-up. Highlights Balanced sound for full range - highs, mids and bass. Extended highs with high resolution for layered instrumental audio. Warm mids highlight human voice. Bass driven with enough impact and extension. Great for pop music, blues, jazz, orchestral music and folk songs. Work in excellent harmony with gentle female voice.