Thanks so much for Tumnoon Prateepichinda to write such a nice review on Weiss DAC202. He mentioned “One knob to rule them all” is very suitable description to DAC202 with its rotary and press switch for many great features. The TRSP transparency test with the supplied WAV files can easily test if your computer is performing correct to send transparent data to DAC202. The knob controls volume -60dB to 0dB Max. (Various output level from 1.06v, 2.12v, 4.15v & 8.15v). Digital inputs includes all kinds from AES, SPDIF, Toslink & Firewire.