Dual mono - fully balanced Class A preamplifier warp R2R - 256 steps pure analog volume USB audio class 2.0 DAC Phono stage optional module Proprietary control mechanism Analog and digital coaxial inputs XLR balanced outputs UPnP media player, streamer, recorder HDMI input stereo audio extraction HDMI output for extended graphical user interface Dual SABRE ES9038 PRO - 140 dB signal to noise ratio Roon Ready: one year complimentary subscription MORE