... /192K ,24bit/192K music playback C,Modular headphone-amp design , OP+BUF framework D,Aluminum chassis with vertical and horizontal display E ... X2 amp and X3 loudspeaker which combines into a mini( high quality )audio system F. Linear power supply , sound clearer G,Multi ... Multifunctional as USB DAC, USB sound Card , Headphone –amp and Pre-amp Headphone-amp 6.5mm headphone jack, it can drive 30-300ohm ...