1More's Triple Driver In-Ear Headphones feature two balanced armatures and a separate dynamic driver deliver an extremely powerful yet intimate listening experience. Together they create a spacious and transparent feeling of having nothing between you and your music. 1More's patented armatures work together to deliver sizzling highs and can withstand extremely high input power without distortion. They have an extended frequency range up to 40,000 Hz to reproduce high-resolution audio. Frequencies in this range add “transients”, a sonic quality normally only heard in live music. The armatures are uniquely inset with durable silicone covers for lasting performance and resilience. 1More's patented triple layer driver with aerospace grade metal inside two outer layers of PET, a resilient polymer, greatly increases bass and midrange response time, definition, and fullness.