Class A preamplifier dune R2R - 256 steps pure analog volume USB audio class 2.0 DAC Phono stage optional module Roon Ready: one year complimentary subscription 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 mono - fully balanced MORE 32x paralleled DACs per channnel - 140 dB signal to noise ratio