... .Headphone Amp chip: AD8397.Digital Output: Coaxial (RCA), Fiber Optical (round).Analog Output: LINE OUT, headphone AMP output.LINE OUT parameters ... * 78mm * 27mm (excluding the output socket, switch, button, etc.) 150mm * 78mm * 30mm (with all the sockets, VR button, switch, button) Package size: 235mm * 135mm * 55mm ...