Fostex pc100usb hr2 high resolution usb dac and volume control the pc100usb hr is a 24bit96khz high resolution usb dac the pc100usb hr uses usb bus power so does not require an external power supply the convenient centrally placed volume dial makes it great for desktop use at home or on the move as a high resolution dac supporting audio files up to 24bit 96khz the pc100usb hr is made from high quality audio parts in order to optimise performance in this very affordable price range the rea