The Zdac sounds more natural & less "digital" than DACs selling for far more because of its innovative design & high quality parts. Its unique re-clocking system preserves the original source audio data by eliminating jitter contamination that is picked up along the digital signal chain. This is accomplished through the synergy of two premium parts, an Analog Devices AD1895 asynchronous sample rate converter & an AD1853 DAC IC, the same DAC IC that Holm selected for our Halo CD 1 CD player. To further improve sound quality the signal is up-sampled to 422k Hz. This highly effective jitter-reduction system works on all inputs, not just the USB (Universal Serial Bus) input, as in many other DACs.