The headphone outputs of laptops and PC's are not usually very powerful. This often impairs audio quality. Der Premium Headphone Amp No. 2 has a high-quality digital/analogue converter to replace the integrated, usually basic, sound cards of devices such as PCs and laptops. Its high-quality analogue amplifiers are optimally tuned to each other. They drive and control the connected headphones with exceptional accuracy and provide greater volume, dynamics and precision.   Plug & Play   Also suitable for high-impedance headphones Compact design Power supply via USB Compatible with Windows XP, Vista, Windows 7/8 Rubberised plastic housing Latest chip technologies   ADDITIONAL PRODUCT DATA