The Hifiman Shangri-La electrostatic headphones system offers Hifiman’s ultimate listening experience. Inside the headphones you’ll find nanotech drivers, less than 0,001mm thick. Result? Lightning-fast response with virtually zero distortion. For this flagship system, Hifiman came up with radical new technology: metal mesh stators working in proximity to the ultra-thin diaphragm provide superior openness and less distortion than other headphones. The frame is manufactured using a specialized metallic alloy; chosen to ensure sonic stability and to minimise distortion. The width of the grating of the mesh measures only 50um, making it so fine that sound waves lower than one 1×10^6 Hz (1 million Hertz) can pass trough without distortion. The headphones have an extended frequency response from 7Hz to 120kHz.Custom designed amplifierThe amplifier features four custom designed and custom made 300B tubes; the warm beating heart which pumps the audio lifeblood of the Hifiman Shangri-La. The 300B tube works as the direct driving stage. There are neither capacitors nor transformers between the tubes and headphones, meaning the Hifiman Shangri-La might be the only audible system you can directly listen to the 300B’s heavenly sound. The distinct design of the Hifiman Shangri-La’s relay-based attenuator has a 24 step of volume level control and utilizes a total of 23 separate resistors. Every volume level is therefore unique and independent. Mere noise gives way to a pure heavenly reproduction of any harmony.SpecificationsHeadphonesFrequency Response: : 7Hz -120kHzBias Voltage: : 550-650VWeight: : 13.2oz (374g)AmplifierWeight: : 35lb (16kg)Dimensions: : 17.32″ x 18.11″ x 13.39″ (437.8*458.9*335.8mm)Visit the Hifiman website.